Alexander Grothendieck's user avatar
Alexander Grothendieck's user avatar
Alexander Grothendieck's user avatar
Alexander Grothendieck
  • Member for 11 years, 1 month
  • Last seen more than 9 years ago
  • Fronsac
23 votes
Accepted

Abelianization of free group is the free abelian group

8 votes
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Good source for a point set topological introduction to CW complexes?

7 votes
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Group theory notation

6 votes
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$\mathbb{Z} _{29}$ is a field. True or False.

5 votes
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Linear map $f:V\rightarrow V$ injective $\Longleftrightarrow$ surjective

4 votes
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Every projective f. g. module is f. p.

4 votes
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Distributional Laplacian of logarithm and the Dirac delta distribution

4 votes

Why is expectation defined by $\int xf(x)dx$?

3 votes
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Meaning of 'small real parameter'?

3 votes
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If no outer measure is present, do people use the term "measurable set" simply for any element in a given $\sigma$-algebra?

3 votes
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For the inner product on complex spaces, why must we use the complex conjugate?

3 votes
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Functional analysis and physics

2 votes
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Why do we need dual space

2 votes
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Higher Dimensional Paley Wiener Theorem

2 votes
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Tempered fundamental solutions

2 votes
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Roadway and book recommendations to math study.

1 vote
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every homomorphism from field to ring with more than two elements is an isomorphism

1 vote
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Polynomial ring and the free algebra

1 vote
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If two analytic functions agree on a disk in their domain $D$, then they are equal in $D$?

1 vote
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Proof of the five lemma

1 vote
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Composition of Differential Operators

1 vote
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Finding $g_i:\mathbb{R}^n\to\mathbb R$ s.t $f(x)=\sum\limits_{i=1}^nx_i\cdot g_i(x)$

1 vote
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Differential equation with the Dirac Delta as the solution

1 vote
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Norm Space verification

0 votes
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Finite groups with no common prime factor of their orders

0 votes
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Category of topological pairs

0 votes
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What is relationship between Wirtinger differential operator and multivariable chain rule?