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Daniel Asimov's user avatar
Daniel Asimov's user avatar
Daniel Asimov
  • Member for 14 years, 9 months
  • Last seen this week
  • University of California, Berkeley
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comment
Extending an embedding with trivial normal bundle
Don't you want to use different symbols for the two embeddings you have called "j" ?
comment
Existence of translation-invariant basis on $C_c(\mathbb R)$
In your definition of "shift invariant", how is t quantified? Are you requiring the statement to be true for all real t ? Or that there exists at least one t (presumably ≠ 0, right?) such that it is true?
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 Good Answer
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 Necromancer
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 Nice Question
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 Yearling
answered
What is a foliation and why should I care?
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Vector field on 3-sphere
HJRW: One side is equal to 2K and the other side is equal to -2K, implying K = 0.
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Vector field on 3-sphere
In the last Euler characteristic equation I erroneously wrote S^3 where I meant to write W. Now fixed.
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Vector field on 3-sphere
Euler characteristic of S^3 —> Euler characteristic of W, resulting in K x 2 = 0 - 2K
answered
Vector field on 3-sphere
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Autobiographies and correspondences of mathematicians
Norbert Wiener also has a companion volume, "Ex-Prodigy".
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Learning from unsuccessful attempts at the Poincaré conjecture
Haaken —> haken
suggested
Approve
Learning from unsuccessful attempts at the Poincaré conjecture
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Classification of finite groups of isometries
No, I think you mean Conway and Smith's book (John H. Conway and Derek A. Smith), "On Quaternions and Octonions".
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What are some correct results discovered with incorrect (or no) proofs?
Just to be obsessive about names: It's "Eratosthenes".
answered
Complementary integrable vector fields
revised
Does for every vector field there always exist a volume form for which the vector field is a homothety?
added 19 characters in body
revised
Does for every vector field there always exist a volume form for which the vector field is a homothety?
added 19 characters in body
revised
Does for every vector field there always exist a volume form for which the vector field is a homothety?
added 19 characters in body
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