Matthias Köppe's Avatar

Matthias Köppe

@mkoeppe

Professor, UC Davis #Mathematics. He/him. #DavisCA. Made #SageMath pip-installable @passagemath.org. https://github.com/mkoeppe #Python #OpenSource #cutgeneratingfunctionology #optimization #orms I block accounts to increase reading focus.

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14.11.2024
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Latest posts by Matthias Köppe @mkoeppe

Release passagemath-10.8.2.rc3 · passagemath/passagemath What's Changed src/sage/structure/category_object.pyx: Undo rename of unique representation object in doctest by @mkoeppe in #2234 pkgs/sagemath-lcalc: Ship the lcalc binary by @mkoeppe in #2235 b...

Release candidate 10.8.2.rc3 of passagemath, the comprehensive #OpenSource #Mathematics system in #Python, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...

06.03.2026 23:11 👍 3 🔁 2 💬 0 📌 0

But how to manage perfectionism when recording?

05.03.2026 21:20 👍 1 🔁 0 💬 1 📌 0

Apropos of nothing, @ucdavis.bsky.social

04.03.2026 20:17 👍 1 🔁 0 💬 0 📌 0
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Long-COVID Sufferer Awarded Nearly $1M After Employer Refused to Let Her Work From Home | Law.com A jury in Nassau County awarded $954,000 to a longtime employee of Stony Brook University Hospital Blood Bank.

A woman with Long Covid won almost one million dollars in a lawsuit against her employer who refused to allow her work from home accommodations.

May this set a precedent.

Remote work should be accessible to all who need it.

It’s a game changer for people with disabilities.

04.03.2026 08:37 👍 1687 🔁 644 💬 10 📌 12
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The passagemath project, created in October 2024, celebrates today its first-ever mention in a #SageMath Google Groups post that is not a defamation.
groups.google.com/g/sage-devel...
#Python #OpenSource #Totalitarianism

04.03.2026 17:24 👍 2 🔁 1 💬 0 📌 0
Release passagemath-10.8.2.rc2 · passagemath/passagemath What's Changed src/sage/categories/homset.py: Undo renames of unique representation objects in doctests by @mkoeppe in #2228 Relax doctests with PosixPath in the output by @mkoeppe in #2229 src/sa...

Release candidate 10.8.2.rc2 of passagemath, the comprehensive #OpenSource #Mathematics system in #Python, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...

03.03.2026 19:45 👍 1 🔁 2 💬 0 📌 0
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Math Prof. @mariagillespie.bsky.social, founder of MaskTogetherColorado ( @wemaskcolorado.bsky.social), was interviewed by Óscar Contreras, @denver7.bsky.social for advocating for universal masking in Colorado hospitals to combat the unprecedented surge in flu cases. bit.ly/Denver7_on_MTC 🧵

03.03.2026 04:58 👍 26 🔁 11 💬 2 📌 0
Release passagemath-10.8.2.rc1 · passagemath/passagemath What's Changed Install .pyi files by @mkoeppe in #2213 Fix doctests related to singular: make them compatible with newer releases of Singular by @jhpalmieri, backported by @mkoeppe in #2211 build/...

Release candidate 10.8.2.rc1 of passagemath, the comprehensive #OpenSource #Mathematics system in #Python, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...

03.03.2026 00:22 👍 4 🔁 2 💬 0 📌 0

Come see me speak about the new era of simplex method theory. Wednesday!

01.03.2026 11:30 👍 14 🔁 5 💬 1 📌 0
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Release passagemath-10.8.2.rc0 · passagemath/passagemath passagemath-highs updates HiGHS has been update to version 1.13.1. passagemath-singular updates Singular has been updated to version 4.4.1p5. passagemath-symbolics updates Dependencies on passagema...

Release candidate 10.8.2.rc0 of passagemath, the comprehensive #OpenSource #Mathematics system in #Python, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...

01.03.2026 19:56 👍 3 🔁 2 💬 0 📌 0
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Today in the @ucdavis.bsky.social arboretum in #DavisCA.

23.02.2026 00:44 👍 3 🔁 0 💬 0 📌 0
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Updated table of #SageMath / passagemath distributions and deployments github.com/passagemath#..., now including #WebAssembly deployment with @jupyter.org JupyterLite.
#Python #OpenSource #Mathematics

22.02.2026 20:56 👍 4 🔁 1 💬 0 📌 0
CLHS: Section The Printer Dictionary

No literature review of pretty printing can be complete without mentioning www.lispworks.com/documentatio...

21.02.2026 19:32 👍 1 🔁 0 💬 0 📌 0
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First @jupyter.org JupyterLite #Python notebook for serverless, in-browser #SageMath computations in algebraic combinatorics, using passagemath-combinat compiled to #WebAssembly with @emscripten.org
passagemath.org/passagemath-...
#OpenSource #Mathematics

20.02.2026 01:45 👍 3 🔁 5 💬 0 📌 0
Screenshot of Bluesky posts by Will Stancil questioning why more Twin Cities businesses require masks and suggesting masking is becoming a left-coded political signal

Screenshot of Bluesky posts by Will Stancil questioning why more Twin Cities businesses require masks and suggesting masking is becoming a left-coded political signal

Screenshot of Bluesky posts by Jamelle Bouie saying that vaccination and staying home when sick are public health obligations, but masking at all times in public is unreasonable and driven more by fear than rational threat assessment

Screenshot of Bluesky posts by Jamelle Bouie saying that vaccination and staying home when sick are public health obligations, but masking at all times in public is unreasonable and driven more by fear than rational threat assessment

Screenshot of Bluesky posts by Michael Hobbes arguing that saying "during COVID" is ok given declining death trends since 2022, along with a CDC chart of weekly U.S. COVID deaths, posted on top of Arielle Duhaime-Ross criticizing the phrase as implying the pandemic is over

Screenshot of Bluesky posts by Michael Hobbes arguing that saying "during COVID" is ok given declining death trends since 2022, along with a CDC chart of weekly U.S. COVID deaths, posted on top of Arielle Duhaime-Ross criticizing the phrase as implying the pandemic is over

Starting a thread of large lib accounts on here who minimize Covid/long Covid and in turn contribute to the stigmatization of people who still mask

(If you follow or reshare these folks, please reconsider)

18.02.2026 15:11 👍 155 🔁 42 💬 16 📌 4
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Updated passagemath platform table.
github.com/passagemath/...
#Python #SageMath #OpenSource #Mathematics

18.02.2026 05:28 👍 2 🔁 3 💬 0 📌 0

First passagemath #WebAssembly packages available on the @prefix.dev emscripten-forge channel
#Python #SageMath #OpenSource #Mathematics

17.02.2026 17:25 👍 8 🔁 5 💬 0 📌 0

This is Colum̈n Gen̈eration

14.02.2026 22:23 👍 1 🔁 1 💬 0 📌 0
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I approve of putting .. on top of more letters

14.02.2026 20:24 👍 1 🔁 1 💬 1 📌 0

Packaging of passagemath for emscripten-forge, for serverless use in the web browser with JupyterLite.
github.com/emscripten-f...
#SageMath #Python

13.02.2026 21:29 👍 1 🔁 2 💬 0 📌 1
A small grey and brown thrasher with streaky breast and Buffy face patching is doing a run.

A small grey and brown thrasher with streaky breast and Buffy face patching is doing a run.

Suspicious thrasher is suspicious

Suspicious thrasher is suspicious

An unexpected find while out checking vernal pools today, a Sage Thrasher in Yolo County! Not where I expected to see you, but ok. 🪶

13.02.2026 06:57 👍 39 🔁 5 💬 1 📌 0
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Packaging request: passagemath - modularized fork of SageMath · Issue #4384 · emscripten-forge/recipes https://github.com/passagemath provides the full functionality of the SageMath system in modularized form as 120 pip-installable packages. I'd be interested in collaborating on making passagemath a...

A packaging effort for passagemath's WebAssembly port has started in emscripten-forge.
github.com/emscripten-f...

13.02.2026 06:19 👍 1 🔁 1 💬 0 📌 1
Springer advertisement for the "Branch-and-Price" book

Springer advertisement for the "Branch-and-Price" book

our #openaccess book on "branch-and-price" is finally published; you can download it here link.springer.com/book/10.1007...

#orms @springernature.com

10.02.2026 20:27 👍 30 🔁 6 💬 4 📌 1
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Release passagemath-10.8.1 · passagemath/passagemath Support for Python 3.10 dropped The passagemath-10.8.x series supports Python 3.11–3.14. The passagemath-10.6.x series, which includes support for Python 3.10, is still supported until October 2026...

First stable release of the 10.8.x series of passagemath, the pip-installable modularized fork of #SageMath. Up to date with SageMath 10.9.beta3 (Jan 2026). Binary wheels uploaded for Linux, macOS, Windows, for the x86_64 & ARM platforms.
github.com/passagemath/...
#Python #OpenSource #Mathematics

08.02.2026 23:34 👍 3 🔁 7 💬 0 📌 0
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Release passagemath-10.8.1.rc3 · passagemath/passagemath Final release candidate passagemath-highs This new pip-installable package ships a mixed-integer linear programming backend using the HiGHS solver. Package upgrades CVXpy has been upgraded from ver...

Final release candidate 10.8.1.rc3 of passagemath, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...
#Python #OpenSource #Mathematics #orms

06.02.2026 19:36 👍 5 🔁 4 💬 0 📌 0
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Release passagemath-10.8.1.rc2 · passagemath/passagemath What's Changed build/pkgs/{regina,khoca}: Add 'math' tag by @mkoeppe in #2095 pkgs/sagemath-gfan/MANIFEST.in: Add missing file src/sage/interfaces/gfan.py by @mkoeppe in #2103 sage.interfaces.giac...

Release candidate 10.8.1.rc2 of passagemath, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...
#Python #OpenSource #Mathematics

05.02.2026 17:57 👍 2 🔁 4 💬 0 📌 0
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Release passagemath-10.8.1.rc1 · passagemath/passagemath More binary wheels for Windows on ARM Binary wheels for Windows on ARM are now also available for the following distribution packages: passagemath-cmr passagemath-m4ri-m4rie passagemath-modules pa...

Release candidate 10.8.1.rc1 of passagemath, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...
#Python #OpenSource #Mathematics

04.02.2026 03:12 👍 2 🔁 4 💬 0 📌 0

Once again, imagine this happening at the ICM - there's no way we (the U.S.) can host the ICM responsibly #mathsky

02.02.2026 20:57 👍 31 🔁 7 💬 1 📌 1

Reminds me of a meeting in 2024 with a certain #SageMath committee whose members pretended not to know what the word "leadership" means. #gaslighting #OpenSource

02.02.2026 21:08 👍 2 🔁 0 💬 0 📌 0
Release passagemath-10.6.48 · passagemath/passagemath Dedicated to Michael Joswig on the occasion of his 60th birthday. passagemath-m4ri-m4rie updates m4ri has been updated to version 20260122. passagemath-polymake updates polymake now includes polyDB...

Stable release 10.6.48 of passagemath, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...
#Python #OpenSource #Mathematics #polymake

02.02.2026 18:28 👍 2 🔁 3 💬 0 📌 1