User Jacob Bond

7 votes

4 answers

2k views

Explaining that $1 \cdot 3 \cdot 5 \dotsm (2n+1) = 1 \cdot 3 \cdot 5 \dotsm (2n-1)(2n+1)$

asked Mar 2, 2015 at 1:49

6 votes

2 answers

1k views

Why a particular ring of integers is not generated by a single element

asked Aug 28, 2014 at 14:53

4 votes

2 answers

1k views

Units in a ring of fractions

asked Jan 2, 2015 at 22:55

4 votes

1 answer

218 views

Why does $\mathfrak{p} \supseteq \mathfrak{a}$ imply $\mathfrak{p}$ is the only prime containing $\mathfrak{a}^{ec}$?

asked Oct 27, 2015 at 20:18

3 votes

1 answer

125 views

Consider infinity in codomain of rational function if field is algebraically closed

asked Sep 26, 2016 at 22:54

3 votes

0 answers

296 views

Harmonic except at a point [duplicate]

asked Aug 5, 2014 at 3:20

3 votes

1 answer

52 views

Scalar multiple of one lattice contained in another

asked Jul 22, 2014 at 1:45

3 votes

1 answer

138 views

Subspace of certain series in a Hilbert space is compact

asked Jun 15, 2014 at 1:10

3 votes

2 answers

1k views

What is $\operatorname{Aut}(\mathbb Z_4\times\mathbb Z_2)$?

asked Jun 23, 2014 at 5:05

2 votes

2 answers

367 views

The way conjugation acts on embeddings

asked Apr 3, 2014 at 2:56

2 votes

1 answer

5k views

Harmonic functions and polar differential forms

asked Jul 9, 2014 at 17:24

2 votes

1 answer

239 views

Relationship between simplicial complex and abstract simplicial complex

asked Aug 6, 2015 at 3:56

2 votes

1 answer

115 views

Largest ideal of a local field on which a character is trivial

asked Oct 3, 2014 at 2:14

2 votes

1 answer

763 views

Showing $\operatorname{Aut}(\mathbb{R})$ is abelian

asked Oct 16, 2014 at 15:01

2 votes

1 answer

40 views

Basis for sum of all extensions of a completion: $\bigoplus_{w \mid v} \mathcal{O}_{w}$ over $\mathcal{O}_{v}$

asked Oct 20, 2014 at 15:57

2 votes

2 answers

539 views

Continuous maps between covering spaces are surjective

asked May 21, 2017 at 19:30

1 vote

1 answer

47 views

$3\times3$ matrix with 5 eigenvectors?

asked Nov 10, 2014 at 2:33

1 vote

1 answer

466 views

Direct product of algebraic groups is an algebraic group

asked Feb 24, 2015 at 21:20

1 vote

1 answer

45 views

Is it true that for a lattice $L$, $\mathbb{R}L = \mathbb{R}^{n}$?

asked Apr 15, 2015 at 19:16

1 vote

1 answer

66 views

A question regarding intersections and products of fields

asked Jun 2, 2015 at 18:28

1 vote

1 answer

155 views

Polar partial derivatives continuously differentiable implies holomorphic

asked Jan 29, 2014 at 4:53

1 vote

0 answers

21 views

Showing that $(x,y)\mapsto(x^2,xy)$ is unramified

asked Jun 14, 2016 at 14:50

1 vote

1 answer

529 views

Finding a distinguished open set in the intersection of two $\operatorname{Spec}$s [duplicate]

asked Sep 25, 2016 at 22:48

1 vote

1 answer

145 views

Volume between two "orthogonal" paraboloids

asked Nov 7, 2016 at 3:14

1 vote

0 answers

330 views

Irreducibility of multivariate polynomial implies irreducibility of specializations?

asked Dec 14, 2016 at 18:38

1 vote

1 answer

134 views

Action of a coset space in GAP

asked May 1, 2017 at 17:38

1 vote

3 answers

1k views

Automorphisms of splitting field of $x^p-x-a$

asked Aug 9, 2014 at 21:03

1 vote

0 answers

45 views

Putting a direct system on a product of direct limits

asked Sep 10, 2014 at 15:43

1 vote

2 answers

387 views

Infinite field which is not a metric space [closed]

asked May 29, 2014 at 20:58

1 vote

1 answer

502 views

Convergence of a sequence of unit vectors in a Hilbert space

asked Jun 13, 2014 at 20:21

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38 Questions

Explaining that $1 \cdot 3 \cdot 5 \dotsm (2n+1) = 1 \cdot 3 \cdot 5 \dotsm (2n-1)(2n+1)$

Why a particular ring of integers is not generated by a single element

Units in a ring of fractions

Why does $\mathfrak{p} \supseteq \mathfrak{a}$ imply $\mathfrak{p}$ is the only prime containing $\mathfrak{a}^{ec}$?

Consider infinity in codomain of rational function if field is algebraically closed

Harmonic except at a point [duplicate]

Scalar multiple of one lattice contained in another

Subspace of certain series in a Hilbert space is compact

What is $\operatorname{Aut}(\mathbb Z_4\times\mathbb Z_2)$?

The way conjugation acts on embeddings

Harmonic functions and polar differential forms

Relationship between simplicial complex and abstract simplicial complex

Largest ideal of a local field on which a character is trivial

Showing $\operatorname{Aut}(\mathbb{R})$ is abelian

Basis for sum of all extensions of a completion: $\bigoplus_{w \mid v} \mathcal{O}_{w}$ over $\mathcal{O}_{v}$

Continuous maps between covering spaces are surjective

$3\times3$ matrix with 5 eigenvectors?

Direct product of algebraic groups is an algebraic group

Is it true that for a lattice $L$, $\mathbb{R}L = \mathbb{R}^{n}$?

A question regarding intersections and products of fields

Polar partial derivatives continuously differentiable implies holomorphic

Showing that $(x,y)\mapsto(x^2,xy)$ is unramified

Finding a distinguished open set in the intersection of two $\operatorname{Spec}$s [duplicate]

Volume between two "orthogonal" paraboloids

Irreducibility of multivariate polynomial implies irreducibility of specializations?

Action of a coset space in GAP

Automorphisms of splitting field of $x^p-x-a$

Putting a direct system on a product of direct limits

Infinite field which is not a metric space [closed]

Convergence of a sequence of unit vectors in a Hilbert space