4,105 reputation
833
bio website nullteilerfrei.de
location Germany
age 29
visits member for 3 years, 6 months
seen 1 hour ago

I'm a PhD student with research interests in Algebraic Geometry, Algebraic Complexity Theory and Geometric Invariant Theory.


Jul
29
answered intuitive interpretation of dimension of an affine variety
Jul
29
answered Ramification divisor and Hurwitz formula of higher dimensionanl vaireities
Jul
15
answered Polynomials and the inverse matrix
Jul
5
comment Projection is an open map
@WishingFish: See my edit. Hope this helps!
Jul
5
revised Projection is an open map
added 747 characters in body
Jul
4
answered Complex analysis book for Algebraic Geometers
Jun
27
comment Proving a morphism is étale
$x-a_1$ and $x-a_2$ are not both units because otherwise, $f^\sharp(\pi)$ would be a unit, which is impossible because $f^\sharp$ maps $\mathfrak m_Q$ into $\mathfrak m_P$, and $\mathfrak m_P$ contains no units. If $x-a_1$ is irreducible, then it must be equal to the factor $x-b$. Hence $b=a_1\ne a_2$, hence $x-a_2$ is a unit. I also added the part where I missed the fact that everything goes south in characteristic two.
Jun
27
revised Proving a morphism is étale
added 76 characters in body
Jun
27
answered Proving a morphism is étale
Jun
2
comment Input size measurement according to polynomial presenation
@Gigili: Computer algebra system ;)
Jun
2
awarded  Yearling
Jun
1
answered Input size measurement according to polynomial presenation
Jun
1
revised Orthogonality on a Matrix Ring
added 282 characters in body
Jun
1
answered Orthogonality on a Matrix Ring
May
31
answered Morphism of finite type between affine schemes is quasi-projective
May
31
revised Proving that free modules are flat (without appealing projective modules)
added 31 characters in body
May
31
answered Proving that free modules are flat (without appealing projective modules)
May
30
answered Multipliciousness within an inner product space.
May
29
revised Find the polynomial $f(x)$ which have the following property
The p was overloaded as a coefficient.
May
29
answered Graph-theory question regarding degrees and cliques