User Dmitry Vaintrob

2 votes

Number of connected components of the set of invertible matrices over the reals when some of the matrix entries are fixed

answered Jul 26, 2020 at 8:35

2 votes

Name for a Hopf algebra admitting no non-trivial 1-dimensional comodule

answered May 28, 2021 at 22:59

2 votes

Topological version of K-theory of coherent sheaves

answered Oct 4, 2017 at 16:01

1 vote

Separable extensions & topology vs inseparable extensions and algebra

answered Apr 28, 2020 at 22:17

1 vote

The Fock space vs the Hilbert space in the context of quantum field theory

answered Jul 27, 2020 at 18:12

1 vote

Computationally intractable orbit of a monoid action on a finite set

answered Sep 24, 2021 at 9:29

0 votes

K-theory of a coconnective dga

answered Dec 30, 2021 at 18:23

0 votes

Holomorphic union of sets

answered Mar 8, 2020 at 3:22

0 votes

Accepted

Can a simple lie algebra be determined by weights of its representation?

answered Jun 11, 2012 at 10:50

0 votes

Skew fields inside quaternion division algebras

answered Feb 4, 2013 at 21:23

0 votes

On a theorem of Kazhdan

answered Apr 5, 2015 at 22:12

0 votes

Components of a Fiber Product

answered Aug 7, 2014 at 3:31

0 votes

Is there a standard name for the following type of linear operator?

answered Feb 19, 2016 at 3:51

Stack Exchange Network

43 Answers

Number of connected components of the set of invertible matrices over the reals when some of the matrix entries are fixed

Name for a Hopf algebra admitting no non-trivial 1-dimensional comodule

Topological version of K-theory of coherent sheaves

Separable extensions & topology vs inseparable extensions and algebra

The Fock space vs the Hilbert space in the context of quantum field theory

Computationally intractable orbit of a monoid action on a finite set

K-theory of a coconnective dga

Holomorphic union of sets

Can a simple lie algebra be determined by weights of its representation?

Skew fields inside quaternion division algebras

On a theorem of Kazhdan

Components of a Fiber Product

Is there a standard name for the following type of linear operator?