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A Pat Day

@apatday

Finance, engineering, math I know about.. ➝ Nix, Haskell, lisp, rust, etc ➝ Hedge funds, startups, corporate strategy, etc ➝ HoTT, category theory, etc

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30.01.2026
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Latest posts by A Pat Day @apatday

Painful temporary problem- any ideas?

need to borrow high DSP SoC FPGAs (Xilinx) for a few weeks because of a planning issue on my end

VPS bitstream solutions are not an option

how do I get that done through partnering w/ a uni or physics instrumentation company?

Ideally time on an ABN build too

07.03.2026 01:40 👍 0 🔁 0 💬 0 📌 0
Preview
Composition of attractor lattices – Topos Institute This summer at the Topos Institute, under the supervision of Dr. Sophie Libkind, I studied the composition of attractors. The project itself started earlier with my advisor, Dr. William Kalies, who as...

topos.institute/blog/2026-01...

06.03.2026 02:28 👍 0 🔁 0 💬 0 📌 0

Checking out for the night - good luck!

03.03.2026 06:22 👍 1 🔁 0 💬 1 📌 0

That makes sense to me - seemed like that would be a component of what’s done in this current paper

03.03.2026 06:21 👍 1 🔁 0 💬 0 📌 0
nLab

Oh ok cool - could be an on-ramp to a whole universe of abstraction tools; has been a cool journey for me so far

seems like a good idea to write your first paper - ur marrying high level math to your computing now, and there’s a great community here - recommend:

ncatlab.org/nlab/show/Ho...

03.03.2026 06:20 👍 1 🔁 0 💬 2 📌 0

Would it be accurate to say that this represents a more specific variety of what TLA+ aimed to do? Like a language to define specs

03.03.2026 06:14 👍 1 🔁 0 💬 1 📌 0

Ok I can dig it - I know those guys are always looking for stuff that’s applied and might have feedback on at the very least the fibers and transition system aspect

No idea though - when they started it seemed very open ended, but haven’t checked in lately, could be more closed now

03.03.2026 06:11 👍 1 🔁 0 💬 1 📌 0

Yeah I’m noticing some repetition in the definitions and the format could be a little clearer

Sometimes ppl use a table when defining the components of a grammar, like in the Curry Howard paper

03.03.2026 05:58 👍 1 🔁 0 💬 1 📌 0
Compositionality - Home Compositionality is free of cost for both readers and authors (diamond open access). You can find our editorial policies here. Our first issue was published, under ISSN 2631-4444, in December 2019.

Ok gotcha, it sounds like you’re getting feedback on the proof and working through case studies to demonstrate

I’m finding that I keep going back to read as I’m typing so maybe worthwhile to just go ahead and read

Do you know where you’re submitting? Considered:? compositionality.episciences.org

03.03.2026 05:55 👍 1 🔁 0 💬 1 📌 0

I thought the parser stuff related to something totally different - to the agentic stuff

This is a really interesting paper - should I wait until it’s done to give a close read or is it basically in a good spot now?

I read the start and the part about HTH

03.03.2026 05:41 👍 1 🔁 0 💬 1 📌 0

Ohh ok, yeah that makes sense. Sounds like the Mac mini approach is dominant right now - hm you’re pretty in vogue

03.03.2026 05:23 👍 1 🔁 0 💬 1 📌 0

A couple of years ago I went to a doctor and was referred to a specialist who did some exercises related to breathing, after ruling out neurological stuff as the cause of some speech issues related to control

Unfortunately it ended up being quite expensive, but there may be some inexpensive tools

03.03.2026 05:22 👍 0 🔁 0 💬 0 📌 0

Garbage collecting your nix or nah? I feel like that’s the issue for me 90% of the time

03.03.2026 05:19 👍 1 🔁 0 💬 1 📌 0

Did you basically structure like a hashmap of functor, where each functor is a combinator?

If so, memoization sounds done, and now it’s down to the implementation details of each parser?

That would sound like a good spot to be

03.03.2026 05:19 👍 1 🔁 0 💬 1 📌 0

This! With an ontology in place, there’s a semantic domain, and by way of this a lot of pattern matching opens up, or morphisms based on a term system

03.03.2026 05:16 👍 1 🔁 0 💬 0 📌 0

It’s mind boggling that every action a person takes opens some tree of possibilities or induces a constraint.

Really important to be intentional rather doing a random walk down eternity’s tree

02.03.2026 23:27 👍 0 🔁 0 💬 0 📌 0

The DOS memory protection thing is nuts

02.03.2026 21:24 👍 1 🔁 0 💬 0 📌 0

🔥🕶️☀️

02.03.2026 21:19 👍 0 🔁 0 💬 0 📌 0

Very interesting!

Rust-native open hardware (RTL) RISC-V chip.

www.youtube.com/watch?v=DaWk...

02.03.2026 19:37 👍 10 🔁 2 💬 0 📌 0

It’s just getting the water, patience

02.03.2026 21:10 👍 0 🔁 0 💬 0 📌 0

How did you approach it?

02.03.2026 06:46 👍 1 🔁 0 💬 1 📌 0

I think his face looks funny

01.03.2026 17:23 👍 1 🔁 0 💬 0 📌 0

Bailed on an event in Mexico this weekend and spent the weekend stress watching the news from America

01.03.2026 16:52 👍 0 🔁 0 💬 0 📌 0
Post image Post image

From the @financialtimes.com Some initial thoughts on the economic and market implications of the Middle East conflict.
For a deeper dive, please check out my latest weekly note on the global economy and markets (links in the prior post).
#economy #markets #oil #MiddleEastConflict #iranwarupdate

01.03.2026 16:10 👍 71 🔁 19 💬 2 📌 5

Haha that’s like the experience of all first drafts I’ve ever done - mad sleepy, arms hurting, and dreading the clear headed walkthrough

01.03.2026 01:14 👍 1 🔁 0 💬 0 📌 0

Fuggg this is legit, you’re getting this done super quickly with ur agent workflow - maybe I’m sleeping on that too much 😅

01.03.2026 01:13 👍 1 🔁 0 💬 1 📌 0

100%

01.03.2026 01:11 👍 1 🔁 0 💬 0 📌 0

Oh ok gotcha - this weekend I’m working on some FPGA stuff and reading some books to destress from the Iran stuff, but I’m down to block out some time in the future

01.03.2026 01:11 👍 1 🔁 0 💬 0 📌 0

Wow ok that’s pretty extensive - I’ll make sure to read the library when you release!

01.03.2026 01:09 👍 1 🔁 0 💬 1 📌 0

Oh also if you want an emacs tester - I know the old version works with emacs -nw I think I saw

Haven’t used ttyrec personally before - but would be happy to test it out if there’s a nix flake - which I realize might be a big ask depending on if that’s foreign

01.03.2026 01:00 👍 1 🔁 0 💬 1 📌 0