Articles
The articles, I write as result of my activities.
Computer science, programming, mathematics, typesetting and Aikidō are common themes.
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Review: RustWeek 2025 I visited RustWeek 2025 by RustNL in Utrecht
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workreflectioncommunityrustlang | |
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Aikidovereine in Graz und Salzburg Ich bin von Graz nach Salzburg gesiedelt. Eine Liste an Aikidovereinen vor Ort.
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sportsAikidō | |
syntok release I want to establish a standard for tokenized syntax. I need this for digital typesetting.
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cssoftware-developmentdigital-typesetting | |
Are line breaks encoded in Office Open XML? Office Open XML is a standard by Microsoft Word. If we look into a OOXML file, are line breaks encoded there?
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cssoftware-developmentdigital-typesetting | |
Move semantics in rust, C++, and Hylo I just read the paper ‘Borrow checking Hylo’ and now I want to compare move semantics of C++, rust, and Hylo.
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cssoftware-developmentprogramming-languagesrustlang | |
Did John McCarthy lament SGML? When researching for my markup report, I came across a quote regarding John McCarthy and SGML – is it genuine though?
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cssoftware-development | |
Review: EuroRust 2024 I visited EuroRust 2024 in Vienna
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cssoftware-developmentcommunityprogramming-languagesrustlang | |
Raporto: esperantistoj en praha Mi verkis raporton pri nia tempo en Praha dum semajnfino
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Esperantoreflection | |
Selecting a license for typho My digital typesetting project typho and an iteration over licensing options
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cssoftware-developmentdigital-typesetting | |
Bugfix for the Oracle instantclient 23.5 distribution Oracle now delivers a broken instantclient distribution. I wrote (the easy) bugfix for it
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cs | |
Berlin trip I have been to Berlin in summer 2024. Here are some photos.
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lifemedia | |
Libro: “Lingvistikaj aspektoj de Esperanto” de John Wells Mi legis libron pri lingvistikaj aspektoj. Do mi lernis pri fonetiko, morfologio, sintakso, kaj leksiko. Mi rerigardas.
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Esperantoreflection | |
La Trankvila programlingvo Rikardo verkis la programlingvo Trankvila. Mi uzis la programlingvon unuafoje.
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languagesEsperantocsprogramming-languages | |
Data-structure-theoretic considerations for 'text documents as trees' Text documents can be considered as trees. We revisit our articles, propose alternative names and consider representations in rust and Haskell
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projecttyphodigital-typesetting | |
Which filepath-join behavior is implemented for relative and absolute paths as arguments? Joining file paths foo and bar usually means foo/bar. But what is the implemented behavior if bar is an absolute path?
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reflectioncssoftware-developmentprogramming-languages | |
for loop extension An extension to the concept of for loops
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reflectioncssoftware-developmentprogramming-languages | |
opstr release 1.0 opstr is an executable which takes some strings and it will apply appropriate string operations
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projecttypho | |
Rilato inter Esperanto kaj malfermfonta koda movado La sufiĉe nova libro “Die Bienen und das Unsichtbare” de Clemens Setz estas konata en la germanlingva komunumo. Mi diskutis kun amiko pri rilato de Esperanto kaj malfermfonta koda movado.
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languagesEsperantocscommunity | |
A relationship between Esperanto and the Open Source movement The pretty new book “Die Bienen und das Unsichtbare” by Clemens Setz is known in the German-speaking Esperanto movement. I discussed with a friend one aspect which is the relationship between EO and Open Source.
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languagesEsperantocscommunity | |
A modern plea for lean software “A plea for lean software” (1995) is an influential paper by Niklas Wirth. I post my own modern thoughts on the topic.
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cssoftware-development | |
Which information is encoded in Signal's user QR codes? A group of IT security interested people wondered which information is encoded. I did a source code analysis.
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csIT-securityprivacy | |
Mutual exchange peers I came across this idea several times in my life. I think we could elaborate on the idea of 'mutual exchange'. So I wrote down some notes
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life | |
Bildoj de la Universala Kongreso de Esperanto en Turino 2023 Mi vizitis la Universala Kongreso de Esperanto en Turino ĉi-jare. Estis agrabla sperto.
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languagesEsperantolife | |
Du senpreparaj statistikaj illustraĵoj pri Esperanto Mi trovis datumojn kaj verkis du statistikaj illustraĵojn pri la esperanta komunumo
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lifelanguagesEsperanto | |
Two impromptu esperanto statistics I looked up some data and decided to create two quick ad-hoc statistical illustrations about the Esperanto community
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lifelanguagesEsperanto | |
Taking a look at the XymosTeX project by Emily Eisenberg If you want compatibility with LaTeχ in digital typesetting, you need to run its underlying programming language. There is only one implementation in C. XymosTeX is a re-implementation in rust.
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software-developmentdigital-typesettingTeχ | |
Mi finis la duolingan Esperantan arbon Mi eklernis Esperanton en la jaro 2019 per duolingo. Nun mi finis la tutan arbon en duolingo.
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Esperantoreflection | |
litua release 2.0 litua is an executable I wrote to process a markup language - a neat intersection of Lua and rust
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projecttypho | |
The feature set of ICU4X ICU4X is a rust library implementation of Unicode's ‘International Components for Unicode’ effort. An overview.
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projecttyphodigital-typesetting | |
La jaro 2022 Mi revizitas la jaron 2022
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lifeAustriaEsperantoreflection | |
Book: ‘Logicomix’ by Apostolos Doxiadis and Christos H. Papadimitriou I got this book as a gift. I read it. A book review.
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mediaGermanreflectionmathdiscrete-mathematics | |
Book: ‘Maus I: My Father Bleeds History’ by Art Spiegelman Anita recommended the book “Maus” to me. I read it. A book review.
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mediaEnglishreflection | |
Graph-theoretic considerations for 'text documents as trees' Text documents can be considered as trees. We look at these trees from a graph-theoretic point of view and introduce four names.
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projecttyphodigital-typesetting | |
DANTE Herbsttagung 2022 notes The German Teχ User Group held an online event in autumn 2022. I participated online on Friday. Some notes.
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projecttyphodigital-typesettingTeχ | |
A review of finl I reviewed the plans of finl - finl is not LaTeX ‘Reinventing LaTeX for the twenty-first century’
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projecttyphodigital-typesetting | |
Can declarative rust macros be compiled conditionally? Can one define declarative rust macros conditionally? Can specific cases of macros be compiled conditionally?
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cssoftware-developmentprogramming-languagesrustlang | |
japan22 trip I have been to Japan in 2022. Here are some photos.
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lifelanguagesJapanese | |
Miaj interesoj Mi priparolas miajn interesojn
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lifelanguagesEsperanto | |
classic-mceliece-rust 2.0 We published the 2.0 release of a safe pure-rust Classic McEliece implementation
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csIT-securitypqcryptosoftware-developmentprogramming-languagesrustlang | |
Trying out Pijul I originally used mercurial. Then I switched to git and never left. Let's try out modern alternative Pijul.
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cssoftware-development | |
I cannot get my xmltex MWE running I spent way too much time on this issue. I wanted to document how my minimal working example which does *not* run
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projecttyphodigital-typesetting | |
Lua implementation of syntax escaping styles I wanted to observe algorithmic complexity of syntax escaping styles in a trivial Lua implementation
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projecttyphodigital-typesetting | |
On the concept of syntax escaping I wanted to look at the fundamentals of syntax escaping
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projecttyphodigital-typesetting | |
The NIST PQC decision On the 5th of July 2022, NIST published which PQC algorithms they want to standardize. A comment.
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csIT-securitypqcrypto | |
DANTE Sommertagung 2022 Friday notes The German Teχ User Group held an event in Magdeburg over 4 days. I participated online on Friday. Some notes.
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projecttyphodigital-typesettingTeχ | |
Can one restructure the entire module API of a rust crate from the internal API? rust uses a file structure to define modules (besides the mod keyword). Can one turn it around in the public API?
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cssoftware-developmentprogramming-languagesrustlang | |
Implementing value delegation in Lua I like the prototype-based OOP approach of Lua. Let us implement value delegation.
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cssoftware-developmentprogramming-languageslua | |
I step back as organizer of Grazer Linuxtage [soon] I am a part of Grazer Linuxtage for about 11 years now. I am stepping back [soon].
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projectgltreflection | |
Endorsing the secret types proposal for rust I think the secret types proposal for rust is interesting and shall be endorsed from LLVM's side.
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csIT-securitysoftware-developmentrustlang | |
ntrust-native 1.0 We published the 1.0 release of a safe pure-rust NTRU implementation
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csIT-securitypqcryptosoftware-developmentprogramming-languagesrustlang | |
Two papers on Open Source and a reflection I read two papers on open source and reflected on the FLOSS situation
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cssoftware-developmentcommunity | |
Quote by Kawasaki Ideas are easy. Implementation is hard.
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cssoftware-developmentdigital-typesettingprojecttypho | |
Buch: ‚Die Bienen und das Unsichtbare‘ von Clemens Setz Das Buch „Die Bienen und das Unsichtbare“ hat mir mein Bruder geschenkt. Gelesen. Ein Review.
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mediaGermanEnglishEsperantoreflection | |
typho log: week #5 In the fifth week, I spent time discussing with other people.
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cssoftware-developmentdigital-typesetting | |
Basic XML Q&A Software developers usually have some understanding of XML. But what about the details? I answer my own questions.
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cssoftware-developmentdigital-typesetting | |
classic-mceliece-rust 1.0 We published the 1.0 release of a safe pure-rust Classic McEliece implementation
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csIT-securitypqcryptosoftware-developmentprogramming-languagesrustlang | |
Downloading arxiv source files through AWS S3 requester-pays buckets I want to download a large corpus of Teχ files. How complex can this be?
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projecttypho | |
rusty-saber 1.0 We published the 1.0 release of a safe pure-rust Saber implementation
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csIT-securitypqcryptosoftware-developmentprogramming-languagesrustlang | |
Buch: „Die Farben der Magie“ von Terry Pratchett Ich habe das Buch „Die Farben der Magie“ gelesen. Ein Review.
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mediaGermanEnglishreflection | |
Annotating a compile-time value to a rust struct How can I annotate a compile-time value to a rust struct? Not.
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cssoftware-developmentprogramming-languagesrustlang | |
typho log: week #4 I work almost full-time on my typho project. An informal summary of my fourth week
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cssoftware-developmentdigital-typesetting | |
kvarido Esperanto uses suffixes to attach additional meaning. A random thought.
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languagesEsperanto | |
Why is the current month decisive for PQC? NIST wants to decide upon the finalists to standardize now. An overview.
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csIT-securitypqcrypto | |
typho log: week #3 I work full-time on my typho project. An informal summary of my third week
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cssoftware-developmentdigital-typesetting | |
Can we get KEMs from signatures (vice versa) in PQC? RSA allows to swap keys to get digital signatures from the encryption scheme. What about PQC?
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csIT-securitypqcrypto | |
typho log: week #2 I work full-time on my typho project. An informal summary of my second week
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cssoftware-developmentdigital-typesetting | |
On yak shaving and Don Knuth's birthday I want to comment on the yak shaving article. On the occasion of Don Knuth's birthday.
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digital-typesetting | |
typho log: week #1 I work full-time on my typho project. An informal summary of my first week
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cssoftware-developmentdigital-typesetting | |
NIST's AES CTR random number generator in rust NIST uses
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csIT-securitypqcrypto | |
Does wrapping/saturating generate branches? rust provides various multiplication/addition methods. Which one generate branches?
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cssoftware-developmentrustlang | |
FLOSS password manager's data storage Where do FLOSS password managers store their data? A table.
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cssoftware-developmentIT-security | |
On Description of Teχ Donald Knuth described the initial design of Teχ in two white papers. A retrospective view.
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cssoftware-developmentdigital-typesettingTeχ | |
Definitions for rust's ownership rust has a unique ownership model. But how does one explain it?
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reflectioncssoftware-developmentprogramming-languagesrustlang | |
PQC illustrations in public domain I created PQC logos for free use.
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projectcsIT-securitypqcrypto | |
Saluton Saluton! Mi estas Luko. Mi volas skribi mallongan tekston en Esperanto regule. Hodiaǔ mi komencas.
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languagesEsperanto | |
Differences in the NTRU ref and pqm4 implementations I looked at the difference between the NTRU reference implementation and the pqm4 implementation
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csIT-securitypqcrypto | |
Intel's RDTSC instruction with rust's RFC-2873 asm! macro rust recently updated its asm! macro. Time to look at RDTSC with rust.
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cssoftware-developmentprogramming-languagesrustlang | |
Rust performance results converting slice into array rust has arrays and slices as data types. Which shall we use for optimal performance?
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csIT-securitypqcryptorustlang | |
Movie review: Tehran Taboo I think the visual of “Tehran Taboo” are very interesting
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reflectionAustriamedia | |
Neo2 issues on xubuntu The Neo2 keyboard layout does not feature standardized characters. A list of issues.
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digital-typesettingUnicode | |
Duolingo: Tips for Diamond League Duolingo has the competitive concept of Leagues. Tips on finishing first in Diamond League
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languagesreflection | |
Running Inkscape 0.92 extensions with python3 Since Inkscape 0.92, you can run Inkscape extensions with a different python interpreter than the application
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cssoftware-developmentLinux | |
Pandoc's data model Pandoc tries to provide universal conversion between markup languages. Let us look at the data model
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cssoftware-developmentdigital-typesetting | |
Unicode issue: different encodings for diacritics [withdrawn] There are different encodings for diacritics in Unicode. Two case studies.
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digital-typesettingUnicode | |
The Problem with ‘The Problem with Unicode’ An article “The Problem with Unicode”
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cssoftware-developmentdigital-typesettingwriting-systemsUnicode | |
On the distributivity of arithmetic and boolean operations in 2ⁿ In hardware security, you often mix arithmetic and boolean operations. But for which operations does distributivity hold true?
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csIT-Securitypqcrypto | |
Pictures: Klagenfurt am Wörthersee I spent one week in Klagenfurt am Wörthersee. I took some pictures of Klagenfurt and the local lake.
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lifeAustriamedia | |
Pictures: BRG Viktring I spent one week in „Klagenfurt am Wörthersee“. I took some pictures of my former school building.
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lifeAustriamedia | |
Transposing bits This article discusses the transpose function of Classic McEliece's reference implementation
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csIT-securitypqcryptosoftware-development | |
Movie review: Quo Vadis, Aida? Movie review related to the Srebrenica Massacre
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media | |
Movie review: System Crasher Just a movie review of a better movie
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media | |
mod3 of NTRU's reference implementation This article discusses the mod3 function of NTRU's reference implementation
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csIT-securitypqcryptosoftware-development | |
Deriving algorithms for computing modulo constant n “mod 2³” means considering only 3 bits. What about “mod 7”? An article about modulo algorithms
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csIT-securitypqcryptosoftware-development | |
The current state of compile-time evaluations in rust In which ways can you parameterize a program such that the parameter is a const value in rust?
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cssoftware-developmentprogramming-languagesrustlang | |
entr – run arbitrary commands when files change A neat tool fundamental to my software stack
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cssoftware-developmentLinux | |
Esperanto resources I wanted to share my collection of Esperanto resources
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languagesEsperanto | |
Bert Hubert's blog entries on PowerDNS' history I read Bert Hubert's articles on the history of PowerDNS. I enjoyed them a lot and wanted to share them here.
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reflectioncssoftware-development | |
Esperanto's table of correlatives One of the advantages of a conlang is that you can achieve regularity in many aspects of a languages. The table of correlatives is one example for me
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languagesEsperantoEnglishGerman | |
#rC3 talk notes continued I continued watching #rC3 talks. I want to publish my talk notes
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csIT-security | |
‘A Philosophy of Software Design’ commentary John Ousterhout presents “A Philosophy of Software Design” in his Google Talk. I watched the talk and add my own two cents to it
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cssoftware-development | |
Markup language language servers Microsoft pushed the idea of language servers. Are language servers for markup languages available?
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cssoftware-development | |
My smartphone's power button broke down The power button of my smartphone stopped working. How can I retrieve its data?
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lifecs | |
Vivado installation gets stuck at ‘Generating installed device list’ How to solve the Xilinx Vivado 2018.1 installation stuck issue when ‘Generating installed device list’?
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cssoftware-developmentusability | |
More #rC3 talk notes I continued watching #rC3 talks. I want to publish my talk notes
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csIT-security | |
Software architecture rules and effects I just wanted to make a summary of (humorous or not) software architecture rules/effects
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cssoftware-development | |
Are languages logical? Natural languages exhibit some structure in their grammar. Are languages logical therefore?
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languages | |
A Raspberry Pi Sense HAT firework with Lua We celebrated New Year's Eve by implementing a firework in Lua with the Sense HAT with python.
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cssoftware-development | |
#rC3 my Day Four #rC3 is taking place between 2020-12-27 and 2020-12-30. I joined some talks on Day Four
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csIT-security | |
#rC3 my Day Three #rC3 is taking place between 2020-12-27 and 2020-12-30. I joined some talks on Day Three
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csIT-security | |
Movie: Der Trafikant Austria's national broadcoast premiered ‘Der Trafikant’, a movie about a young tobacconist struggling during upcoming tensions due to nationalsocialism
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reflection | |
#rC3 my Day Two #rC3 is taking place between 2020-12-27 and 2020-12-30. I joined some talks on Day Two
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csIT-security | |
#rC3 my Day One #rC3 is taking place between 2020-12-27 and 2020-12-30. I joined some talks on Day One
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csIT-security | |
Introduction to Go concurrency with goroutines and channels Concurrency in go using goroutines and channels; an introduction
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programming-languagesgolang | |
‘PDF/A considered harmful for digital preservation’ considered harmful Remarks on the paper ‘PDF/A considered harmful for digital preservation’
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digital-typesettingpdf | |
Conferences during Covid19 Conferences cannot take place on site during Covid19. What are alternatives? A list of examples.
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glt | |
Array, slices and references - rust notes When developing a rust PQCRYPTO software using arrays heavily, I got confused with related types. A cheatsheet
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software-developmentprogramming-languagesrustlang | |
Division by constant in assembly In our paper, we mention that division by some constant is often represented as multiplication. How and where?
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csIT-securitypqcrypto | |
Inception I just watched “Inception” (2010). I praise it for its story line and slow motion scenes
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media | |
Data visualization cheatsheets I just looked into the 'Cheat Sheets for Visualization Techniques' project
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cs | |
Difference of arithmetic and logical shifts (illustrated in rust) Every programmer knows. Arithmetic shifts only occur in signed types.
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cssoftware-developmentprogramming-languagesrustlang | |
Introduction to rust and its memory safety On Friday, I will give a 45–50 minute introduction on rust with a focus on memory safety
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workcssoftware-developmentprogramming-languagesrustlang | |
A review of UNIX shells I spent one day testing various shells in an unstructured manner and made a summary
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cssoftware-developmentLinux | |
Drawing pixels on a Raspberry Pi Sense HAT with Lua I controlled the RPi Sense HAT with python, but never with Lua. I implemented it natively.
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cssoftware-development | |
Too much crypto JP Aumasson wrote a paper proposing parameterizations for cryptographic primitives with a lower security margin. The main motivations are performance and adoption.
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csIT-securitypqcrypto | |
I step back as organizer of PyGraz I became an organizer of PyGraz about 2 years ago. I am stepping back.
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cssoftware-developmentcommunity | |
Definition: ring-LWE LWE needs to use very large keys. ring-LWE overcomes this limitation
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csIT-securitypqcrypto | |
The Fujisaki-Okamoto transform The FO transform is used by PQCRYPTO KEMs to achieve IND-CCA security
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csIT-securitypqcrypto | |
Definition: Ideal lattices Ideal lattices are used as a basis in many lattice-based crypto schemes
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csIT-securitypqcrypto | |
Movie review: “Big Fish” (2003) Big Fish is a typical Tim Burton movie teaching about understanding and empathy for other people
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media | |
Contact tracing and the MIT Safepaths project How can you organize contact tracing globally in a privacy-preserving way?
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csIT-securityprivacy | |
Degree sequence equality iff graph isomorphism? A simple math question was baffling me since 2013. Here is the answer.
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mathdiscrete-mathematics | |
My experience report with i3wm I used i3wm over 5 months. It was not a pleasant experience. Here is my summary of aggregated problems.
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cssoftware-developmentLinuxusability | |
Leibniz formula for determinants is zero if any two columns are equal Leibniz formula defines determinants of matrices. In this blog article, I want to show that understanding a complicated formula can be done by understanding its simple, individual parts.
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mathlinear-algebra | |
Beauty of mathematics Mathematics is the study of structures. Structures emerge from our environment and can be beautiful. In this article I want you to look at polynomials and how interconnected its principles are.
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math | |
‚Die beste aller Welten‘ von Lisa Eckart Lisa Eckart is an Austrian poetry slammer performing in the German-speaking DACH region. I like here text “Die beste aller Welten” and decided to translate it (German only)
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languagesGerman | |
Reflections on my rhetorics In order to improve, you need to reflect on what you have done so far. In this post, I am going to look at my own talks and what I did wrong.
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cssoftware-developmentcommunityreflection | |
Cultural differences in preparing an Enbu In Japan, we had to prepare demonstrations (jap. 演武, enbu) several times. I enjoyed the concept there a lot. One year later back in Austria, I was assigned the same task for the first time. At this moment, I recognized a lot of cultural differences in the approach.
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lifeAustriasportsAikidōreflection | |
Austrian Power Grid data I was invited to participate in a small excursion to an electric power transformation station in Sankt Peter-Freienstein, Styria, Austria. A promotion flyer showed data about Austria's electric utility. I want to share it here.
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lifeAustria |