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Robin Houston
Cofounder of . Also maths. Blogging sometimes at . My name is an anagram of “No enthusiasm or job”.
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Robin Houston 11 h
Odgovor korisniku/ci @aendrew
Also it only counts as two characters according to Twitter’s character-counting algorithm, so you can use it to squeeze extra characters into your 🆒 tweets.
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Robin Houston 11 h
Odgovor korisniku/ci @aendrew
It is 🆒er though
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Robin Houston 4. velj
Odgovor korisniku/ci @_julesh_
What set theory are you using? The axiom of foundation limits one to finite-depth nesting. AFA allows cycles in the nesting, but not arbitrary ordinal depths AFAIK.
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Robin Houston 2. velj
One of those apt juxtapositions that Twitter occasionally throws up.
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Robin Houston 1. velj
Odgovor korisniku/ci @octonion
Not exactly a plot twist, but Ian McEwan’s latest features Alan Turing living to prove P = NP. I’m not sure the author entirely grasped the radical implications of an alternate universe in which P = NP!
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Robin Houston 31. sij
Odgovor korisniku/ci @octonion
I don’t really understand what you’re saying, but it reminds me of Chaitin’s Ω – a real number that encodes the solution to the halting problem.
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Robin Houston 31. sij
Odgovor korisniku/ci @ultrazool
It’s all true, but I love the clock anyway.
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Robin Houston 31. sij
Odgovor korisniku/ci @ultrazool
True true – and yet…
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Robin Houston 31. sij
I don’t agree – I think the 10,000 year clock is a better use of time than most of the things people do – but this article is well-written and thought-provoking.
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Robin Houston proslijedio/la je tweet
Jez 30. sij
Here it is!! To me this is so good
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Robin Houston 30. sij
Odgovor korisniku/ci @LeefVan @sheepbop
Yes! Famous examples include LZW (used in the GIF image format) and RSA. Also the OCB encryption mode. Here’s a list of patents required by MPEG-2 (all now expired in the US):
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Greg Egan 30. sij
[1/2] Now that the ingenious has posted linkages that compute both squares and cubes, I thought it would be fun to reverse-engineer the squaring one. If you want to work through this in detail yourself, note that all lengths are multiples of 1/16. The magic here…
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Robin Houston 30. sij
Odgovor korisniku/ci @sheepbop
My (limited and possibly entirely wrong) impression is that different courts in the US have different attitudes, and that a patent like this might not stand up if it could be escalated to a high enough court. But in practice it would be prohibitively expensive to do that.
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Robin Houston 30. sij
Odgovor korisniku/ci @sheepbop
Ask the US patent office. 😠
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Robin Houston 30. sij
I just found out that there’s a clever, fairly new algorithm for multiplying matrices by Karstadt and Schwartz that looks like it might be faster in practical situations. Sadly it looks as though they have patented it.
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Robin Houston 29. sij
Odgovor korisniku/ci @TomChivers
Yes and no, in that order. Which is odd, considering my generally childish sense of humour.
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Robin Houston proslijedio/la je tweet
BBC Archive 25. sij
1961: Alan Whicker got lost in Northumberland.
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Robin Houston 27. sij
Odgovor korisniku/ci @johncarlosbaez @JDHamkins
Do you happen to know what you get in general by slicing the n-cube symmetrically orthogonally to the long diagonal? For n = 1, 2, 3, 4 we have: point, line segment, regular hexagon, regular octahedron. Does this sequence have a name?
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Robin Houston 27. sij
It’s such a waste, because all these “well known” results will be lost within a generation of no one is allowed to write them down. 😟
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Robin Houston 27. sij
That happened to a student I shared an office with. He had a paper rejected on the grounds that his results were well-known, albeit not explicitly in the literature. I get the impression category theory is worse than many other fields in that respect.
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