i isomorphisms

My repos include both deeper-level experiments rethinking overall system architecture (in particular crossing the GCC divide at will), and fun little runnable games, usually made to illustrate and share mathematical experiences which used to be hidden to all but PhD students.

Lower-level ideas

Crossing compiler boundaries. ICK is a GCC-derived C compiler; Idriç experiments with other routes, including direct DEX output for Android ART. I want to know exactly where a compiler decides how to lower a program, how to inspect that decision, and how to change it.

Readable machine operations. English Major C describes individual machine instructions in precise, complete English sentences: registers, memory, branches, the execution index, and what each operation changes. The aim is inspectability by natural-language readers, human or digital, not another opaque layer. Its first English-to-ARM Thumb compiler is a deliberately small experiment, not a complete machine-language implementation.

DEX micro-optimizations. I'm exploring where reusable immutable data belongs: perhaps directly in DEX, perhaps in native read-only storage or separate assets. Colour tables, tries for text or URL matching, and other shared structures offer small experiments in avoiding repeated parsing or construction. The important questions are what ART actually does, where the choice is made, and whether measurement shows any speed or memory benefit.

runnable programs

Spinor

Spinor 0.0.1-pre.1 — prerelease — MIRO A1 APK · MIRO C67 APK · Release notes and checksums · Source

Newer test APKs: A1 and C67 builds, October 14.

Turn through 2π, then 4π. Watch the demonstration.

Credit: Jason Hise created the distinctive six-belt Belt Trick and Antitwister visualizations. This phone app implements that construction independently. Full attribution.

Wegert

Wegert Android test 0.1.50 — prerelease — Download APK · Release notes and checksum · Source

Newer test APK: October 20 build.

Add, move, and cancel zeros and poles; watch the complex-function portrait change. Watch the demonstration.

Credit: Elias Wegert developed this phase-portrait approach. His Complex Beauties calendars were made with Gunter Semmler, Pamela Gorkin, and Ulrich Daepp. This is a separate Android implementation. Wegert's book.

Algebraic Variety Explorer

Source

Test APK: Signed October 21 build (GitHub Actions artifact).

Graph real zero sets in three variables. Watch the demonstration.

Credit: Christian Stussak wrote the original Java jsurf ray tracer for IMAGINARY's SURFER. This project adapts his renderer for Android with touch controls and packaging. Original source · License and credits.

Accelerometer

Accelerometer native 0.2.0 — Download APK · Release notes and provenance · Source

Newer test APKs: October 9 build.

A small native ARMv7/Thumb phone sensor app, without application DEX. Sensor code · Watch the replay.

Pauli

Earlier test APK: October 9 build. Source.

A camera moving around a hydrogen 2pₓ orbital, rendered with this project's native CPU code. Inspired by Dean Dauger's Atom in a Box. Watch the demonstration.

Fourier Voice / Florence Nightingale

Test APKs: October 14 main-branch builds (GitHub Actions artifacts). Source.

A microphone → Fourier mathematics → picture experiment. This movie uses an offline recording of Florence Nightingale, rather than a live microphone. The Android program currently uses AAudio and libc; direct hardware access remains experimental. Watch the movie.

GitHub Actions links lead to temporary test APKs under Artifacts; downloading them may require signing in. The release APK links above are permanent, but some are older than the source.

Organizations

This workspace is lightly organized, not stringently tidy. These organizations keep things in at least some boxes:

Ashtray & Archer — command-line utilities.
House of Government — data and forms.
Isomorphismes — mathematical interactions, like the moving pictures in Harry Potter. I want every video demo to be playable and every playable demo to have a passive video. Most of the time people just watch; sometimes they want to take control. And when the controls are unfamiliar, a demonstration helps.
Fuego Ironworks — an LLM training gym.
Dilapidated Shed — projects being worked on.
IB Pensieve — a web browser of my own design (IB source).