Analyst, metaphysician and founder of scientific computing.https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/notes-on-note-g/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/notes-on-note-g/Walking through the first published algorithm, one operation at a time.Mon, 14 Sep 2026 00:00:00 GMTAlgorithmsMathematicshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/weaving-algebraical-patterns/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/weaving-algebraical-patterns/What a loom that reads punched cards can teach us about programs.Sun, 30 Aug 2026 00:00:00 GMTEnginesDesignhttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/poetical-science/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/poetical-science/Why imagination belongs in mathematics.Sun, 02 Aug 2026 00:00:00 GMTEssayshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/debugging-the-difference-engine/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/debugging-the-difference-engine/A stuck carry, a patch and the stylesheet for the simulator's printout.Fri, 10 Jul 2026 00:00:00 GMTDebuggingEngineshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/letters-to-mr-babbage/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/letters-to-mr-babbage/On corresponding about engines that don't exist yet.Thu, 18 Jun 2026 00:00:00 GMTEnginesLettershttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/translating-menabrea/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/translating-menabrea/Notes from translating a paper, and the notes that outgrew it.Wed, 27 May 2026 00:00:00 GMTWritingMathematicshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/the-science-of-operations/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/the-science-of-operations/Separating what a machine does from what it acts on.Sun, 03 May 2026 00:00:00 GMTMathematicshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/mechanical-music/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/mechanical-music/Could an engine compose elaborate pieces of music?Sat, 11 Apr 2026 00:00:00 GMTEssaysEngineshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/flyology/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/flyology/A childhood plan for a steam-powered flying machine.Thu, 19 Mar 2026 00:00:00 GMTDesignhttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/on-bernoulli-numbers/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/on-bernoulli-numbers/Why this sequence makes a good first program.Tue, 24 Feb 2026 00:00:00 GMTAlgorithmsMathematicshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/a-thought-on-punched-cards/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/a-thought-on-punched-cards/Cards for operations, cards for variables.Fri, 30 Jan 2026 00:00:00 GMTEngineshttps://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/lessons-from-de-morgan/https://varunayyappan.github.io/Nord-Portfolio-Astro-Theme/blog/lessons-from-de-morgan/What a correspondence course in calculus taught me.Thu, 08 Jan 2026 00:00:00 GMTLettersMathematics