Elektrine
Log in Register
Paige Chat Timeline Gallery Friends Email Drive DNS Private DNS Domains VPN Kairo Nerve
Remote

julesh

@julesh@mathstodon.xyz
mastodon 4.7.2
  • Open on mathstodon.xyz

Applied Compositional Thinking

2099 Followers
151 Following
50 Posts
Joined October 30, 2022
🔗:
https://julesh.com
📍:
London
pronouns:
they/them
Open post
julesh @julesh@mathstodon.xyz
· 1mo ago
Boosted by @GroupNebula563@mastodon.social
I feel like enough time has passed that somebody could get away with making a new sketch about the Spanish Inquisition. For sure nobody would expect it.
35
0
13
0
Open post
julesh @julesh@mathstodon.xyz
· 3mo ago
In this paper we improve the bound on the value of Dylan's constant 𝐷. This value, first defined by Dylan [1963], is the number of roads that a man must walk down. We briefly recap the history of Dylan's constant. Although it is not a priori obvious that a man must walk down a finite number of roads, a relatively elementary nonconstructive proof that 𝐷 is finite, using the pigeonhole principle, was quickly given by Yarrow, Stookey and Travers [1963]. The first explicit bound, a stack of exponentials of height 5, was found by Wonder [1966]. This bound was significantly improved by Baez [1976] to 𝐷 ≤ 420 using methods of higher category theory. Although this bound remains the best known currently, Adams [1980] conjectured that 𝐷 = 42 based on extensive computer calculations.
69
0
41
0
Open post
julesh @julesh@mathstodon.xyz
· 2mo ago
If you overflow the level of a bath then it wraps around to the maximum negative fill level, creating a column of water down to the floor downstairs
9
1
3
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

I don't like the term "hallucination" in the context of LLMs for multiple reasons, but the top reason is it's unnecessarily anthropomorphising for something that sometimes needs to be said during technical discussion

My suggestion is "fault", inspired by "page fault". What they have in common is that they are both unavoidable for deep technical reasons, and the best you can do is use various tricks to minimise them under normal conditions

22
7
4
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
I grew up in the AI winter too. But my heart is in the 1960s cybernetics movement.
17
6
1
0
Open post
julesh @julesh@mathstodon.xyz
· 3mo ago
I have a new nsfw alt for hornyposting and nudes. I won't drop the link on main, but reply or dm me and it's very likely I'll send you the link (will happily trade alts too)
7
4
2
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

The function "curry" returns NaN which stands for "not a naan"

13
0
2
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
Perhaps it would be more sensible and/or less controversial to create a brand new degree programme in AI, whose first year is initially frankensteined together from modules of mathematics, statistics, physics and computer science
13
3
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
I think that disagreeing with "LLMs are now central to computer science" would be ahistorical, and probably held mainly by people who grew up in the AI winter. For the vast majority of the field's existence this was *the* flagship problem.
13
18
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

I don't see what all the fuss is about over the power consumption of AI, a perfectly good solution has been there all along

10
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
I'm getting subtwoten, just like the good old days. Have to go really over the top with unpopular takes just to mimic a fraction of the power of algorithmic content curation.
10
2
0
0
Open post
julesh @julesh@mathstodon.xyz
· 2mo ago
Being born gets you put on a government watchlist
3
0
2
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

The true map of London, ie. the London conurbation (population just under 9.8m)

7
2
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
Recognising "wouldn't it be nice if everyone would just not play the unique dominant strategy" as a fallacy is baby stuff. You have to do *real* theory.
7
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Train I was on replaced "where this train terminates" with "where this train finishes its journey". It's political correctness gone mad, next thing you know they'll be replacing "inclement weather" with a word that isn't made up
6
3
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@mc Literally any Firefox fork, I think they basically all committed to removing mozilla bs from upstream. Personally I use Zen which is a very opinionated fork, but there are plenty that look basically the same
6
1
0
0
Open post
julesh @julesh@mathstodon.xyz
· 4mo ago
Replying to
@mc@mathstodon.xyz @SvenGeier@mathstodon.xyz I'm pretty sure 99% of people in finance are not spending all day staring at data looking for patterns. There have been statistical algorithms that do that more reliably than humans since the 90s
4
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 4mo ago
Replying to
@mc@mathstodon.xyz This also plays into my conspiracy theory that quant finance was a decade ahead of the rest of the world in deep RL when it peaked around 2017 (aka they knew some stuff back then that nobody knows to this day), but then were completely blindsided by the transformer architecture (which for them is probably far more useful to run on raw time series data than on language)
4
2
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@johncarlosbaez@mathstodon.xyz @pigworker@types.pl I learned the same thing but the other way round (this is not a coincidence, we were in the same place when it happened). I knew this operation was a monad but didn't know it was the free monad monad Said in terms of just polynomial functors, the operation p* defined as the least fixpoint of p*(y) = y + p(p*(y)) (that's the least fixpoint of an endofunctor on Poly) is both a monad -* on Poly, and also has the property that p* is a monad on Set for every p
5
3
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@JacquesC2 I did this for my PhD thesis
5
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

Queering the binary/nonbinary binary

5
2
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

logic of brunch implications

5
0
1
0
Open post
julesh @julesh@mathstodon.xyz
· 3mo ago
Replying to
In theory a dot matrix printer could print 1 page in the time a laser printer could print like 20 pages, but in reality a dot matrix printer could print 1 page in the time that a laser printer can tell you that it's out of cyan
2
0
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

Attempted to result to using Debug.trace for debugging in idris; discovered that unsafePerformIO is actually broken in idris; found the issue opened by @gallais@mamot.fr 4 years ago
https://github.com/idris-lang/Idris2/issues/2306

mamot.fr

G. Allais (@gallais@mamot.fr) - Mamot - Le Mastodon de La Quadrature du Net

4
5
2
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

I have a category theory question that turned into a set theory question. If you have a functor F : Setᵒᵖ → Set which I promise is representable then you can easily get the the representing set, up to unique bijection, as F(1). What about for a functor F : Set → Set?

If you do F(2) that tells you the powerset of the representing set. Is that enough to know the set? Is powerset injective on sets? If so, is it true in just ZF or do you need more?

Is there a less horrendous way to get back the representing set of a promised-to-be-representable covariant functor, other than trying to invert the powerset operation?

4
6
3
0
Open post
julesh @julesh@mathstodon.xyz
· 4mo ago
Replying to
@mc@mathstodon.xyz oh my god, I'd never been able to figure out why they keep funding and talking about pure maths, the best explanation I could come up with was to mumble about the rationalist cult and AGI, I don't know why I didn't think of this but suddenly everything makes sense
3
1
1
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@pettter Natural language communication, and associated things like common sense reasoning
4
9
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@futurebird The universe has answered: The Beach of the Spectres @christianp
3
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 2mo ago
Replying to
[desperately trying to remember what qbaisc syntax looks like] DIM age% PRINT "How old are you?" INPUT age% IF age% < 13 THEN GOTO jail
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 2mo ago
Replying to
@tranquillity@mastodon.minionflo.net we're gonna have to teach the kids haskell so they can use combinators and pointfree style
1
1
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@michael_ Not for any specific reason, more like a *should*, because AI has been a historical beacon in the field since the very beginning
3
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@pigworker Is ZAN the station code for Angel, or for @zanzi?
3
2
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

I am personally satisfied to consider it empirically settled that symbol grounding is not necessary

3
0
2
0
Open post
julesh @julesh@mathstodon.xyz
· 3mo ago
Replying to
@tranquillity@mastodon.minionflo.net just saying LLMs are incredibly good at frontend, at least anything that's just styling and doesn't have complex logic, the main problem is it would look so professional and corporate nobody would trust it
1
1
0
0
Open post
julesh @julesh@mathstodon.xyz
· 3mo ago
Do Lithuanian catgirls come from Vilnyas
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@lisyarus@mastodon.gamedev.place Sounds plausible... I would like to extract the set of elements, I'm thinking that if you delete the bottom element of the lattice then the set of elements is given up to bijection by the set of remaining minimal elements, which are the singleton subsets
2
2
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago

Piketty pointing out that macroeconomic growth is counterintuitive because it is exponential and measured logarithmatically: "growth rate on the order of 1% is in fact extremely rapid... in generational terms. Over a period of 30 years, a growth rate of 1% corresponds to cumulative growth of more than 35%... in practice, this implies major changes in lifestyle"

2
1
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@mc I think Librewolf is maybe the best known
2
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@Andrev@types.pl It's at least not expected coming from haskell, where unsafePerformIO performs IO, even in interactive. Perhaps the idris version should be renamed to unsafeBuildFreeSyntaxButDoNotPerformIO
1
1
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@boarders None of the cs degrees I've interacted with give enough background in lower years in things like calculus and probability/information theory and data handling methods. In many places it's probably possible with students choosing a very specific combination of options
1
9
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@Andrev @boarders Neat! Oh well, all the people who are angry at me for my unpopular opinion can be angry at EPFL instead
1
2
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@migratory Deep understanding is not the same thing as being able to make guarantees, except in very specific fields like physics where the universe is nice to you. For example in social sciences you can never make guarantees about anything, but that is no reason not to make a deep study of social sciences
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@typeswitch Nice
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@christianp You are in Nottingham. You are likely to be stabbed by a grue.
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@MartinEscardo I'm a bit surprised you're so surprised by this, but maybe I'm biased since Paulo was my supervisor. I don't doubt this result is extremely cool if I could understand it, but instinctively I already felt that topology is related to constructivity (thanks to both topos theory and synthetic topology), whereas my mind is still blown by the cases where dialectica type methods were used to sharpen analytic bounds in ergodic theory and Ramsey theory and things like that
1
0
0
0
Open post
julesh @julesh@mathstodon.xyz
· 5mo ago
Replying to
@BartoszMilewski How are page faults faults? Or faults in tennis, for another example? In the latter case it's a legitimate part of the game
0
1
0
0
Back
313k7r1n3
Elektrine

Tor hidden service

elekhj7afj4qnrr4yd3bkzslsyo5jgfxw3orgjkhlcxifueodybyiiad.onion

I2P eepsite

j6b6cyk6gjmepjih7jjadxgxvvf3lzzujljuu2v4biemzpg3naya.b32.i2p

Platform

  • Email
  • Chat
  • Timeline
  • VPN
  • DNS

Company

  • About
  • Contact
  • FAQ
  • Lite (no JS)

Legal

  • Terms of Service
  • Privacy Policy
  • Transparency Report
  • Report Abuse
  • Warrant Canary
  • VPN Policy

Support

  • support@elektrine.com
  • Report Security Issue
Mail client setup IMAP mail.elektrine.com:993 POP3 mail.elektrine.com:995 SMTP mail.elektrine.com:465
© 2026 Elektrine. All rights reserved. Server: 02:04:09 UTC