darij grinberg's user avatar
darij grinberg's user avatar
darij grinberg's user avatar
darij grinberg
  • Member for 14 years, 3 months
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6 votes

The action of $GL_{\infty}$ on the infinite wedge space

6 votes
Accepted

Modern sources on Lie algebraic methods in combinatorics

6 votes

Injectivity implies surjectivity

6 votes

How to show a certain determinant is non-zero

6 votes
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Is the discriminant of a free (as a module) $R$-algebra always congruent to a square modulo 4?

6 votes

Examples of common false beliefs in mathematics

6 votes
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Minimal polynomial in $\mathbb Z[x]$ of seventh degree with given roots

5 votes
Accepted

Is the kernel of an action of a Hopf algebra on an algebra a biideal?

5 votes
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Minors of low rank skew-symmetric matrix

5 votes

New formula for counting semi-standard Young tableaux?

5 votes
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Expansions of iterated, or nested, derivatives, or vectors--conjectured matrix computation

5 votes
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Factorization of Littlewood-Richardson Coefficients

5 votes
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Constructive proof of univariate McCoy theorem without Dedekind-Mertens?

5 votes
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An example of a tensor product consisting of only simple tensors?

5 votes

Are there results in "Digit Theory"?

5 votes

What are some deep theorems, and why are they considered deep?

5 votes

Existence and characterization of transitive matrices?

5 votes
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Prove a special form of Schur polynomial identity

5 votes
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Constructive proof of a rational version of Perron-Frobenius?

5 votes
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Determinants: periodic entries $0,1,2,3$

5 votes
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On a determinantal equality

5 votes
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An identity in the free associative algebra

5 votes
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Center of a Symmetric Group on an Infinite Set

5 votes

Is there an explicit construction of a free coalgebra?

5 votes

What is the first interesting theorem in (insert subject here)?

5 votes
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Do n-th Witt polynomials generate {P | P' is divisible by n} ?

5 votes
Accepted

If associated-graded of a filtered bialgebra is Hopf, does it follow that the original bialgebra was Hopf?

5 votes

The logic of convex sets

5 votes
Accepted

I don't get a part of Bernstein's / Deligne-Morgan's proof of Poincaré-Birkhoff-Witt

5 votes

Is there a notation for the symmetric / antisymmetric subspaces of a tensor power that distinguishes them from the symmetric / exterior power?

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