Julian Kuelshammer

less info
meta site favicon meta user | stack exchange network profile network profile
3,695 reputation
31133
bio website iaz.uni-stuttgart.de/…
location Stuttgart, Germany
age 26
visits member for 1 year, 8 months
seen 10 hours ago
stats profile views 1,468

Post-Doc working in representation theory


115 Answers

newest activity votes
12
Prove that if $A - A^2 = I$ then $A$ has no real eigenvalues
10
Need some help settling a bet
8
Is there any non-monoid ring which has no maximal ideal?
7
Path Algebra for Categories
6
solve system of linear congruences mod 13
5
Does this isomorphism hold?
5
structure of modules over $\mathbb{Z}^n$
4
Book recommendation for associative algebras
4
Does the projectively stable category have projective modules?
4
Prove that if matrix $A$ is nilpotent, then $I+A$ is invertible.
4
hausdorff space and continuous function
4
How to prove a matrix is nilpotent?
3
Showing $(v - \hat{v})\,\bot\,v$
3
Questions about representation theory of associative algebras.
3
$x\otimes 1\neq 1\otimes x$
3
Proving a set (R, *) is a monoid
3
Tensor Product Question in Kassel's Quantum Groups
3
Difference between a ring with 1 and an associative algebra
3
Find the eigenvectors?
3
Find the kernel of a linear transformation of $P_2$ to $P_1$
3
What do $\gg$ and $\ll$ mean?
3
Given a quiver, how do you get the indecomposable injective modules from indecomposable projective modules?
3
Function $\mathbb Z\times \mathbb Z \to \mathscr P(\mathbb Z)$ defined by $f(a,b) = \{a,b\}$. Show f is not one-to-one. Show f is not onto.
3
Does tensoring by a flat module preserve pullbacks of pairs of monos?
3
How to calculate $(3+4i)\cdot(1+i)$
3
Vector space of polynomials
3
If $d$ is the integer which generates $a \mathbb Z + b \mathbb Z$
3
How do I write this in set builder notation?
3
Projective modules over $k[X,Y]/(X^3,Y^5)$
2
Partial cycles in projective resolutions of square-free algebra
1 2 3 4