3,228 reputation
1833
bio website jakitoimgeisterhaus.blogspot.…
location Munich, Germany
age 38
visits member for 3 years, 2 months
seen yesterday

My past research interests included differential algebraic equations, nonlinear analysis and relations between symmetries and structural properties.

I recently investigated hierarchical structures, starting from group cohomology, continuing with semi-group theory and ending with lattices and universal algebra.


Jul
10
revised Can a biased physical random source be post-processed to control the bias?
edited tags
Jul
10
asked Can a biased physical random source be post-processed to control the bias?
Jul
7
comment Which biased random sources can be obtained from an unbiased one?
The expanded answer is even more awesome. And it is actually a quite canonical procedure, in a certain sense.
Jul
7
comment Which biased random sources can be obtained from an unbiased one?
Cool, I'm glad I asked. But you surely mean one can get every $p\in \mathbb Q\cap[0,1]$, not every $p\in[0,1]$. Or what would you do for $p=1/\sqrt{2}$?
Jul
7
accepted Which biased random sources can be obtained from an unbiased one?
Jul
7
asked Which biased random sources can be obtained from an unbiased one?
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
25
accepted Are these two equivalences really as “immediate” as Jean-Yves Girard claims?
Jun
25
answered Are these two equivalences really as “immediate” as Jean-Yves Girard claims?
Jun
23
awarded  Yearling
Jun
22
asked Are these two equivalences really as “immediate” as Jean-Yves Girard claims?
Jun
19
reviewed Looks OK $R[x]$ can be an integral extension of $R$?
Jun
19
reviewed Reject suggested edit on For $R$-modules $M,N$, what are sufficient conditions for $\operatorname{Supp}(M\otimes_R N)\subseteq \operatorname{Supp}(\operatorname{Hom}_R(M,N))$?
Jun
19
reviewed Reject suggested edit on Noetherian ring and prime ideal contained in an invertible maximal ideal.
Jun
19
reviewed Leave Open 3 random numbers to describe point on a sphere
Jun
19
reviewed Leave Open Ring of linear transformations modulo finite rank transformations
Jun
19
awarded  Custodian
Jun
19
reviewed Approve suggested edit on An elegant description for graded-module morphisms with non-zero zero component
Jun
9
comment Trying to calculate length of one parameter in complex geometrical object (polygon)
If you have to program this for some "real" application, you might also have to take care about the case H2 >> R. So a max(T/2, X) might be a good idea.