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Chris Martens

@chrisamaphone.bsky.social
175 followers 198 following 73 posts

mostly not here, but there: hci.social/@chrisamaphone

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Chris Martens @chrisamaphone.bsky.social · 17/05/2026
structural normalization, part 1 (STLC to sequent calculus) chrisistyping.bearblog.dev/structural-n...
chrisistyping.bearblog.dev
Structural Normalization (1: STLC to Sequent Calculus)
{Previously: Part 0} What I'm calling structural normalization -- a normalization procedure for simply-typed lambda calculus derived from concepts from st...
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Chris Martens @chrisamaphone.bsky.social · 17/05/2026
yeah, some combination of suspecting and knowing about this is a big reason i mostly use mastodon now web.archive.org/web/20260515...
web.archive.org
The Feed Is Fake
What if every viral song, movie, meme, influencer, and celebrity drama in recent memory was the result of a stealth marketing campaign?
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Chris Martens @chrisamaphone.bsky.social · 10/05/2026
structural normalization, part 0 chrisistyping.bearblog.dev/structural-n...
chrisistyping.bearblog.dev
Structural Normalization (0: prelude)
In 1935, Gentzen [1] introduced natural deduction as a system of formal logic and wanted to prove it sound. To do this, he also invented the sequent calculus...
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Rob Simmons @simrob.com · 09/05/2026
toe
Black and white cat showing off the toe beans on a back paw
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
i've never been good at "funder friendly" explanations of my work, but the sort of thing i do is also useful for helping people write programs that don't lose money or leak secrets or get people killed. i think a lot about the social processes in which these kinds of tools intervene.
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
a lot of what i'm up to lately is throwing various combinations of noodles and sauces at the wall to see what sticks, but the broad theme is "let's give humans an unambiguous way to write down some rules that construct a world and then explore the consequences of that world."
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
this concludes the reverse-chronological portfolio tour for now. if you know anyone who might want to fund the kind of work i do (and doesn't mind that it has no LLMs in it whatsoever), could you please let me know? thanks.
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
and i guess it was still technically last year (!) that we gave our popl talk about finite-choice logic programming, AKA the theory behind dusa.rocks , my favorite story so far for how to represent a possibility space as a logic program and reason about that program operationally.
dusa.rocks
Dusa Interpreter
Learn Datalog, and more, today! Try out the Dusa logic programming language right now in your browser.
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
also last year, with CMU coauthors, we published an account of Substructural Parametricity: the set of possible canonical programs of type [forall a. a -> a -> a * a] changes depending on whether -> and * are unrestricted, linear, or ordered. chrisamaphone.hyperkind.org/papers/fscd2...
chrisamaphone.hyperkind.org
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
last year at TYPES, i gave an invited talk called "a guided tour of polarity and focusing", in which i explain how a surprisingly complete proof search strategy changed how we think about type structure. video: www.youtube.com/watch?v=EbcE... | slides: chrisamaphone.hyperkind.org/types-2025.h...
chrisamaphone.hyperkind.org
TYPES 2025 talk
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
mastodon thread with some context and highlights: hci.social/@chrisamapho...
hci.social
chris martens (@chrisamaphone@hci.social)
new from me, @etosch , @cxli@scholar.social , and Elan Semenova: "Is truth future-proof? On the possible futures of mechanized proof". contains provocations, philosophical framings, and accounts of cu...
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
here is a preprint from me and three coauthors called "Is truth future-proof? On the possible futures of mechanized proof", presented at PLATEAU last month: khoury.northeastern.edu/~cmartens/pa... | slides: khoury.northeastern.edu/~cmartens/ta...
khoury.northeastern.edu
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Chris Martens @chrisamaphone.bsky.social · 13/04/2026
perhaps i should share things here in addition to mastodon? here's my first blog post in awhile, an attempt to explain how to extract an abstract machine from a moded logic program: chrisistyping.bearblog.dev/abstract-mac...
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Chris Martens @chrisamaphone.bsky.social · 11/04/2026
v and i both understand those concepts. i was just asking if the phrase originated from something else they'd read
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Chris Martens @chrisamaphone.bsky.social · 11/04/2026
where does "a corpus is not a body" come from?
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jason grinblat @jfg.land · 26/03/2026
*bewilderedly* Love doesn't just sit there, like a stone? *with growing ire* It has to be made, like bread?? *shaking with indignation* Remade all the time??? Made new?!
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Anthony Moser @anthonymoser.com · 27/08/2025
I considered writing a long carefully constructed argument laying out the harms and limitations of AI, but instead I wrote about being a hater. Only humans can be haters.
anthonymoser.github.io
I Am An AI Hater
I am an AI hater. This is considered rude, but I do not care, because I am a hater.
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Reposted by Chris Martens
Rob Simmons @simrob.com · 07/01/2026
Wittgenstein. Absolutely incomprehensible as a poster (laudatory). Becomes a meme to quote-post him with “That‘s a terrifying answer, have a nice day” or possibly “Sir, these are fifth grade students.”
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mel thomas @pagemelt.bsky.social · 06/07/2025
hi! 😃 i couldn't help but notice that scrolling is sapping your will to live! may i offer u a video essay in these trying times? youtu.be/Bdj14_jdumI
youtu.be
be your own algorithm
YouTube video by pagemelt
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Chris Martens @chrisamaphone.bsky.social · 23/08/2025
The name is perfect lol
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Omar Rizwan @omar.website · 22/08/2025
you should be able to share your digital location with friends the same way you share your physical location
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Chris Martens @chrisamaphone.bsky.social · 22/08/2025
just so i'm not talking behind @chaudhuri.info's back, i'll crosspost this from mastodon to where he can see it :) hci.social/@chrisamapho...
hci.social
chris martens (@chrisamaphone@hci.social)
i really enjoy the wordcraft of this line from the abstract of kaustuv chaudhuri's 2008 paper "focusing strategies in the sequent calculus of synthetic connectives": "focusing striates a sequent deri...
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Chris Martens @chrisamaphone.bsky.social · 14/08/2025
WOW Universe
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Chris Martens @chrisamaphone.bsky.social · 02/07/2025
I want to attend this lecture. (except I’ve already been slightly baseballpilled by my first sox game at fenway)
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Cat Hicks @grimalkina.bsky.social · 29/06/2025
incredible work lots of people saying, "wow CS needs to learn what it's doing." Folks. It knows.
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Chris Martens @chrisamaphone.bsky.social · 14/06/2025
congrats on the launch! the "oxidized" verbiage is something related to Rust, right? i thought i heard that somewhere, but i could be making things up.
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neotl @ctrlcreep.bsky.social · 08/06/2025
Bore me not with your designs for a rooftop garden; I desire a rooftop forest. I want to feel secure between vast roots. I am a burrow-dweller, I yearn for the artificial understory, I must fall asleep to fungus-song
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Kristopher Micinski @krismicinski.bsky.social · 28/05/2025
photos from the Minnowbrook Logic Programming Seminar
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Chris Martens @chrisamaphone.bsky.social · 17/05/2025
endorsing you for sexual suggestion on linkedin
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Chris Martens @chrisamaphone.bsky.social · 14/05/2025
I’ve been relying more on Reddit as well
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PSYFE @spacefox.bsky.social · 12/05/2025
Who the FUCK wants videos to autoplay?? WHO?? Tell me who they ARE!! Tell me where they LIVE!! I just want to TALK!!
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Chris Martens @chrisamaphone.bsky.social · 08/05/2025
is there a separate lawsuit about NIH?
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Chris Martens @chrisamaphone.bsky.social · 07/05/2025
yesss this is so great to hear! congratulations!! 🎊
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Harry Goldstein @harrisongoldste.in · 07/05/2025
If you are considering applying for a PhD this Fall, please get in touch. I’m looking for students who are interested in PL, SE, and/or HCI — and ideally all three! You can find more information about me and my work on my website: harrisongoldste.in
harrisongoldste.in
Harrison Goldstein
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M. C. Escher @mcescher.bsky.social · 06/05/2025
Interlaced Hexagon www.wikiart.org/en/m-c-escher/inter…
Interlaced Hexagon
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Chris Martens @chrisamaphone.bsky.social · 03/05/2025
Ooh interactive comic framework yes please
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Chris Martens @chrisamaphone.bsky.social · 03/05/2025
yeah no response yet here either
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Rob Simmons @simrob.com · 02/05/2025
It truly seems like any country could be the world leader in ed&tech for the second half of the century for a pittance in government budget terms, and I don’t know if that’s not happening because I’m wrong or because leaders are short sighted idiots terrified of their xenophobic constituents
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Chris Martens @chrisamaphone.bsky.social · 02/05/2025
wow love!!
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Chris Martens @chrisamaphone.bsky.social · 28/04/2025
that sounds like a question for a research study, not for routine medical care
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Chris Martens @chrisamaphone.bsky.social · 28/04/2025
❤️
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Chris Martens @chrisamaphone.bsky.social · 28/04/2025
Cody you could post this on mastodon it would do great
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Chris Martens @chrisamaphone.bsky.social · 28/04/2025
yep. and even fewer people investigating actually interesting questions about interactivity with computers
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Acronymy @acronymy.net · 28/04/2025
lets one outsmart processes h o l e acronymy.net/define/loophole —submitted by septie
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Chris Martens @chrisamaphone.bsky.social · 23/04/2025
🩷🤍🩵
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David Renshaw @dwrensha.ws · 22/04/2025
Acronymy is 5% complete.
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Cody @codyroux.bsky.social · 22/04/2025
Don't bring *anything* to a gun fight. Why are you going to a gun fight?
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Megan Zahneis @mzahneis.bsky.social · 22/04/2025
A tracker of canceled NSF grants, crowdsourced by @scott-delaney.bsky.social and @noamross.net, is up to 134 grants worth $86.3M.
airtable.com
Airtable | Everyone's app platform
Airtable is a low-code platform for building collaborative apps. Customize your workflow, collaborate, and achieve ambitious outcomes. Get started for free.
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M. C. Escher @mcescher.bsky.social · 21/04/2025
White Cat I www.wikiart.org/en/m-c-escher/white…
White Cat I
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Chris Martens @chrisamaphone.bsky.social · 11/04/2025
i have been feeling like this for uh, about as long as i have been trying to have a career lol
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