92,900 reputation
581169
bio website von-eitzen.de/math/tntrep.xml
location Bonn, Germany
age 48
visits member for 1 year, 7 months
seen 9 mins ago

I did study math and had a knack for it, but I am sooo out of that business now ...


1h
answered Computing coefficient of $x^n$
1h
answered Prove that the only sets in $R$ which are both open and closed are the empty set and $R$ itself.
1h
answered Determining the first few coefficients of the complex power series of $\frac{z + 1}{(z + 2) \cos z}
1h
answered When taking the square root of an adjoined element in a finite field, are both roots available?
2h
answered About the definition of axiomatizable theory and consistency
3h
answered $a_1a_2\cdots a_n = 1 \implies a_1 + a_2 + \cdots + a_n \geq n$ if $a_1, a_2, \dots, a_n > 0$
3h
answered Why are these meshes considered nonmanifold?
4h
answered Finding irreducible polynomials in a field.
4h
answered Proof by induction question about fuel depots
7h
answered Finding homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{6}$.
1d
answered Prove that $\sqrt{n} > \ln n$
1d
answered How to get An eigenvalue and eigenvectors of a matrix that contain both zero column and zero row?
1d
answered How do I prove this set is connected?
1d
answered Prove that $\sin(\frac{\pi}{3}+x)=\cos(\frac{\pi}{6}-x)$
1d
answered Solve this problem?
1d
answered Probability of finding a Hamilton circuit in a graph
2d
answered Is there any motivation for the direct sum?
2d
answered What is the p-adic valuation of elements of $\mathbb{Q}_p$ not in $\mathbb{Q}$.
2d
answered squaring binary doubles the nr of bits?
2d
answered A question about normal subgroups and index