Arnaud Spiwack

D'abord écrit coquelicoq (1 545), son nom vernaculaire est une variante de l'ancien français coquerico, désignant le coq par onomatopée: il s'agit d'une métaphore entre la couleur de la fleur et celle de la crếte du coq°.

Assez évident une fois qu'on le sait (ce qui n'était pas mon cas), mais coquelicot, ça vient de cocorico

The beginning of the video shows some of the strategies that traditional Japanese homes use. I've truly been wondering how a house could survive in this climate before AC, that was interesting. The rest, while presented as different reasons, are really consequences of the first.

Happy birthday Nina SImone, The Legend Of Zelda, and the Communist Manifesto

I wasn't drawing any conclusion. Just reporting my findings. For the record: someone in their 40s.

Today things are changing, we have air conditioning so Japan can insultate housed. It's slowly coming, it seems. 3/3

It goes over strategies that Japan used to dry houses before air conditioning was a thing (I was wondering about that, air conditioning's drying effect is currently vital). And these rely largely on lack of insulation. 2/3

This video addresses the common question about why Japanese homes often have little insulation. * To convert C to F : (C * 1.8) + 32 = F. 👉 *Subscribe here* → … Japanese Houses Don't Have Insulation? Here's Why

This video makes the case that Japanese houses are poorly insulated because the main enemy was humidity not cold (not discussed: it's not true everywhere in Japan, Hokkaido has to wrestle with cold). www.youtube.com/watch?v=CieC... 1/3

For the record, I asked a Swede. They say they didn't recognise the phrase. That kärna doesn't really mean “core” (it has more specific meanings like fruits' stones and atoms' nuclei). That maybe it's a very archaic expression but sounds like nonsense.

Watch live: https://www.twitch.tv/zfg1 Watch the LOTAD: (will link once available) Author: Ello https://www.youtube.com/@Ellornm I threw this mini trailer together very quickly. song: Black… Feb 21 LOTAD Trailer

I was watching this trailer for the 21st Feb lotad. It's just Link doing stuff. Turns out this is a low A press run. And this was all Link pressing A. So emphatically not footage from the run. I admit it's hilarious. www.youtube.com/watch?v=LD74...

At the end of the day, presheaves are a thinking aid. The real question we must answer is “how can we extend terms with effecty things in a natural way?”.
One possible extension is differential λ-calculus. Does it have an interpretation in presheaves?

In one it's for “Rache”, German word for revenge, in the other it's for Rachel. In both case Holmes sneers at the suggestion that it may be the other. 3/3

Several of their episodes recreate accurately the material elements from the original story, but the solution is completely different.

The starkest example is A Mystery in Pink, which adapts A Mystery in Scarlet. Both include an inscription reading RACHE. 2/3

Sherlock Holmes likes to say he deduces. He doesn't. Nowhere is it made clearer than in the very self-aware adaptation Sherlock (the one with Benedict Cumberbatch as Holmes). 1/3

@andrejbauer.mathstodon.xyz.ap.brid.gy let me take this opportunity to learn about Mastodon and the bridge thingy. Do you get notifications when I reply to you without explicitly tagging you? (like the above two messages)

I know this is old news, but I'm still salty about the Dead Boy Detectives being cancelled 🙁

Which is certainly not the same as Ω-valued, since not all subobjects are classified in a quasi-topos. So certainly proof-relevant from the point of view of Rocq, but maybe not quite as arbitrary as I thought.

I don't think I've read paper on this before. I don't quite remember who impressed that fact on me, and I don't want to thrown anybody under the bus because I might have misunderstood. I found arxiv.org/pdf/1106.5331 where they need a modality which acts on every subobjects.

YouTube video by Types and Topology Workshop Andrej Bauer — How to use excluded middle safely

@andrejbauer.mathstodon.xyz.ap.brid.gy regarding non-Ω oracles in www.youtube.com/watch?v=DNGm...
I'm reminded that in a sheafification in a quasi-topos requires such a Type-valued modality. So they'd probably be a better fit in a type theory like Rocq's where unique choice doesn't hold. Good stuff!

With apologies for the delay, the recordings of the talks at the Types and Topology Workshop in celebration of @MartinEscardo's 60th birthday (https://tdejong.com/mhe60) are now on YouTube (where available) 📺

https://www.youtube.com/@mhe60/videos (also linked from the workshop webpage)

Many […]

What I meant is that the argument in the paper is: consider f=λx.⊥. Certain it's such that f(⊥)=⊥, so it's strict in the sense of domain theory. But it's probably incorrect to consider f strict for optimisations. If you had several ⊥, you could instead ask ∀⊥.f(⊥)=⊥ for strictness. f isn't such.

Non, ce n'est pas particulièrement standardisé. Au contraire, les règles de translittération des noms sont conçues spécifiquement, si j'ai bien compris, pour laisser des choix à personnels. Peut-être que les japonais entrent leur nom en kanjis à cet endroit.

At 11.82 bits per English word, a 40x40 jpg is worth a thousand words.

Certainly puts a perspective on all those “so bad that it almost broke Charles Darwin” videos. Maybe Darwin writing to someone that he hated thing didn't mean that thing was bad, maybe it only meant it was Monday.

In this case it's the smallest element of a lattice. It models divergence and errors.

So you can think of ⊥ as saying, if you open me you explode, and f(⊥)=⊥ means that the function explodes on ⊥. Presumably (but not necessarily) because it opened its argument.

Like:
- In school we learnt about the /'noːbəɹi/ trials after WWII
- I've never heard of /'noːbəɹi/, but I know of the /'nobɹi/ trials 🎩🧐

In a presheaf semantics, you have a choice of how your interpret the base types. I suppose this is where we can make the magic happen. Maybe. 5/5

My analysis of the problem is that there would need to be several distinct ⊥, but in domains all failures are identified. This is the sort of things I'm trying to get at with this presheaf story. 4/5

I don't like that, it's heavy and complicated. In the case of strictness the domain semantics shows that you don't need to abandon substitutions (f(⊥)=⊥). But the authors convincingly argue that this definition of strictness isn't quite adequate. 3/5

Aside: it's not surprising that this all looks similar because the notion of strictness that the paper studies is essentially relevance. A substructural property similar to linearity. 2/5

Typing Strictness (Extended Version) Strictness analysis is critical to efficient implementation of languages with non-strict evaluation, mitigating much of the performance overhead of laziness. However, reasoning about strictness at…

In “Typing Strictness” arxiv.org/abs/2510.161... , the author have the same problem that I have with linear types. To define a semantic notion of strictness/linearity you have to abandon substitution semantics and introduce some kind of heap or such. 1/5