898 reputation
714
bio website thomas-kahle.de
location Magdeburg, Germany
age 32
visits member for 4 years
seen Apr 16 at 12:07

I'm a mathematician working in Magdeburg, Germany.


Apr
15
comment Variety of commutative semi group
@J.-E.Pin You are right, I have no idea what the difference between an identity and a relation may be in the context here.
Apr
15
comment Variety of commutative semi group
Judging from the result that you expect, I'm suspecting that you are after the variety of a commutative semigroup ring? Maybe one that satisfies $x_i^2 = x_i^3$ for each indeterminate $x_i$? Please rework this questions, at the moment it makes no sense.
Apr
6
awarded  Popular Question
Oct
7
awarded  Constituent
Sep
30
awarded  Caucus
Sep
28
awarded  Informed
Sep
28
revised vertex independent set and the maximal clique
formatting
Sep
28
suggested suggested edit on vertex independent set and the maximal clique
Sep
28
comment How do you not forget old math?
I agree, and you explained it better than I did.
Sep
28
revised How do you not forget old math?
improve wording
Sep
27
answered How do you not forget old math?
Sep
4
comment Is an ideal generated by multilinear, irreducible, homogeneous polynomials of different degrees always radical?
Now let me get the math.se bounty :)
Sep
4
answered Is an ideal generated by multilinear, irreducible, homogeneous polynomials of different degrees always radical?
Aug
25
awarded  Civic Duty
Aug
19
comment example of Local cohomology
Local cohomology vanishes for all $i < \text{depth}(M)$. Doesn't this give examples right away?
Aug
13
comment Algorithm to decide if ideal is principal
For what it's worth, this question inspired groups.google.com/d/msg/macaulay2/_3ECYzarTZo/o06fW_-E3SgJ
Aug
13
answered Algorithm to decide if ideal is principal
May
6
comment Counting integer points in a Minkowski sum
Google for "mixed volume"
Apr
26
revised A regular polytope
add a remark about badness results.
Apr
26
answered A regular polytope