Tobias Fritz's user avatar
Tobias Fritz's user avatar
Tobias Fritz's user avatar
Tobias Fritz
  • Member for 11 years, 5 months
  • Last seen this week
78 votes

Examples of math hoaxes/interesting jokes published on April Fool's day?

44 votes

Atlas-like websites on specific areas of mathematics

39 votes

Examples of common false beliefs in mathematics

23 votes
Accepted

Realizing universal $C^*$-algebras as concrete $C^*$-algebras

23 votes
Accepted

Reconstructing base manifold from its category of smooth vector bundles

18 votes

Matrix trace & norm

18 votes

When can a function be made positive by averaging?

17 votes

Do rings of smooth functions differ from rings of continuous functions?

17 votes

Atlas-like websites on specific areas of mathematics

13 votes

Another notion of exactness: how to refine it, and where does it fit?

11 votes

Structures of the space of neural networks

11 votes

Is every polytope combinatorially equivalent to the intersection of a simplex and a linear subspace?

10 votes
Accepted

Why is subcoalgebra structure unique?

10 votes

What does it mean for a category to admit direct integrals?

9 votes

Is the class of n-dimensional manifolds essentially small?

9 votes
Accepted

Base of a cone in a vector space: can one always choose a convex base?

8 votes
Accepted

Frankl's conjecture and Oeis sequence A188163

8 votes

The dual of a dual in a rigid tensor category

8 votes

Comparing "axiomatized function spaces"

8 votes
Accepted

Strongly connected components as adjoint functor?

7 votes

Why Kleisli Markov categories and not the Eilenberg-Moore categories of the associated monads

7 votes
Accepted

Hopf monads in categorical probability theory

7 votes

Slicing up monads on categories with pullbacks: what are these mysterious "zerosumfree" monads"

6 votes

Nuclear norm as minimum of Frobenius norm product

6 votes
Accepted

Boolean completion of a partially ordered set

6 votes
Accepted

Graph Isomorphism for Triangle Free graph

6 votes

Big list of repositories of mathematical preprints and postprints

6 votes
Accepted

Do invariant open sets generate the $\sigma$-algebra of invariant sets?

6 votes
Accepted

Pairwise orthogonality for partitions of unity in a *-algebra

6 votes
Accepted

Cartesian monoidal star-autonomous categories