Theo Johnson-Freyd's user avatar
Theo Johnson-Freyd's user avatar
Theo Johnson-Freyd's user avatar
Theo Johnson-Freyd
  • Member for 14 years, 5 months
  • Last seen this week
8 votes

What is the standard notation for a multiplicative integral?

8 votes

References for sign conventions in homological algebra

8 votes
Accepted

Nilpotent Lie algebras and unipotent Lie groups

8 votes

what is the tensor product of two anti-commutative DG-algebras?

7 votes

Are the Platonic solids shadows of 4-polytopes?

7 votes

Summing a divergent series and a constant combined

7 votes

Can we disallow finite choice?

7 votes
Accepted

Zeta-function regularization of determinants and traces

7 votes

How can I learn about doing linear algebra with trace diagrams?

7 votes

Magic trick based on deep mathematics

7 votes

Can the inner structure of an object be systematically deduced from its position in the category?

7 votes

Group-Adjoint and Hopf-Algebra-Adjoint Maps

7 votes

Frobenius $A_{\infty}$-bialgebras?

7 votes
Accepted

Recovering K-theory and KO-theory from KR-theory and Bott Periodicity Theory

7 votes

Undergraduate Topology

7 votes
Accepted

two essentially different concretizaions

7 votes

Euler characteristic and generating series

7 votes
Accepted

Equivalences of $n$-categories

6 votes
Accepted

Why is the bar construction of a DG algebra a coalgebra?

6 votes

Is it possible for the reduction modulo $p$ of an non-commutative semisimple algebra to be commutative?

6 votes
Accepted

Subalgebras of the Temperley-Lieb algebra

6 votes
Accepted

Courant algebroids from Poisson geometry

6 votes
Accepted

Is there an interpretation of the "anticommutative" symmetric monoidal structure on $\mathbb{Z}$-graded abelian groups in terms of $\mathbb{G}_m$ actions?

6 votes
Accepted

What reasonable choices of morphisms are there for the category of Poisson algebras?

6 votes

Is there a good definition of (topological) K-Theory over arbitrary spaces?

6 votes

Poisson algebras as deformations vs. Poisson algebras in algebraic topology

6 votes

Kro-necker versus Kron-ecker: which hyphenation is preferred?

6 votes

The hexagonal property of Pascal's triangle

6 votes

Can you tell the volume of a symplectic manifold from the Poisson brackets?

6 votes

Reshetikhin-Turaev as a 3-2-1-theory

1
3 4
5
6 7
11