User kneidell

22 votes

3 answers

5k views

What does a zero tensor product imply?

asked Dec 21, 2011 at 16:12

17 votes

1 answer

3k views

Nested sequences of balls in a Banach space

geometry functional-analysis metric-spaces banach-spaces

asked Feb 17, 2011 at 9:19

10 votes

3 answers

728 views

Relationship between Category theory and Axiomatic set theory

set-theory category-theory model-theory axioms

asked Mar 23, 2011 at 22:26

9 votes

1 answer

722 views

Involutions of the second type in a division algebra

abstract-algebra number-theory division-algebras involutions

asked Jul 14, 2014 at 8:57

8 votes

2 answers

2k views

Isomorphism of Banach spaces implies isomorphism of duals?

analysis functional-analysis banach-spaces

asked Apr 13, 2012 at 15:09

7 votes

1 answer

464 views

Number of even irreducible monic polynomials of a given degree over a finite field

elementary-number-theory finite-fields irreducible-polynomials

asked Jun 20, 2016 at 19:14

4 votes

1 answer

293 views

Weird quotient of $\langle\mathbb Q,+\rangle$?

abstract-algebra group-theory p-adic-number-theory

asked Jul 5, 2011 at 20:01

4 votes

1 answer

212 views

A step in showing that $\oplus_{i\in\mathbb Z}\mathbb Z$ is reflexive

commutative-algebra

asked Dec 26, 2011 at 14:29

4 votes

2 answers

565 views

Does strong convergence to 0 implies convergence to zero on compact sets?

functional-analysis

asked Feb 15, 2011 at 21:15

3 votes

1 answer

871 views

Cyclic Algebras over local fields- reference request

reference-request field-theory noncommutative-algebra

asked Sep 27, 2012 at 9:02

3 votes

2 answers

537 views

Reduced norms of matrix algebras

abstract-algebra representation-theory algebraic-number-theory noncommutative-algebra

asked Jan 23, 2013 at 11:40

3 votes

0 answers

71 views

Combinatorial interpretation of an equality

combinatorics elementary-number-theory modular-arithmetic

asked Aug 29, 2014 at 11:57

2 votes

0 answers

53 views

Degree of generating polynomial associated with two partitions

combinatorics finite-groups representation-theory generating-functions integer-partitions

asked May 10, 2018 at 10:40

2 votes

0 answers

71 views

Subsets of an equivalence relation- terminology question

elementary-set-theory relations equivalence-relations

asked Sep 5, 2018 at 19:23

2 votes

0 answers

50 views

$\mathbb{F}_q$-rational elements in unipotent classes of simple algebraic group in positive characteristic

algebraic-groups groups-of-lie-type unipotent-matrices

asked Sep 17, 2018 at 9:45

2 votes

1 answer

183 views

Is $SL_1(D)$ topologically finitely generated, for $D$ a division algebra over a local field?

group-theory topological-groups division-algebras subgroup-growth

asked Sep 27, 2013 at 21:05

1 vote

1 answer

46 views

Inequality regarding orbits of groups

group-theory group-actions

asked Feb 18, 2014 at 7:19

1 vote

0 answers

59 views

When is a Hermitian matrix of the form $g^\circ g$ for some matrix $g$.

matrices finite-fields

asked Dec 20, 2015 at 13:01

1 vote

0 answers

45 views

What follows from equality after reduction mod $p$ of closed subgroups of $\mathrm{GL}_n(\mathbb{Z}_p)$?

group-theory p-adic-number-theory local-field profinite-groups

asked Nov 23, 2016 at 7:31

0 votes

1 answer

60 views

Does $\mathrm{Log}(\zeta)$ extend meromorphically past $\Re(s)=1$?

complex-analysis number-theory riemann-zeta

asked Jul 15, 2020 at 14:15

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20 Questions

What does a zero tensor product imply?

Nested sequences of balls in a Banach space

Relationship between Category theory and Axiomatic set theory

Involutions of the second type in a division algebra

Isomorphism of Banach spaces implies isomorphism of duals?

Number of even irreducible monic polynomials of a given degree over a finite field

Weird quotient of $\langle\mathbb Q,+\rangle$?

A step in showing that $\oplus_{i\in\mathbb Z}\mathbb Z$ is reflexive

Does strong convergence to 0 implies convergence to zero on compact sets?

Cyclic Algebras over local fields- reference request

Reduced norms of matrix algebras

Combinatorial interpretation of an equality

Degree of generating polynomial associated with two partitions

Subsets of an equivalence relation- terminology question

$\mathbb{F}_q$-rational elements in unipotent classes of simple algebraic group in positive characteristic

Is $SL_1(D)$ topologically finitely generated, for $D$ a division algebra over a local field?

Inequality regarding orbits of groups

When is a Hermitian matrix of the form $g^\circ g$ for some matrix $g$.

What follows from equality after reduction mod $p$ of closed subgroups of $\mathrm{GL}_n(\mathbb{Z}_p)$?

Does $\mathrm{Log}(\zeta)$ extend meromorphically past $\Re(s)=1$?