127,708 reputation
9121249
bio website von-eitzen.de/math/tntrep.xml
location Bonn, Germany
age 49
visits member for 2 years, 4 months
seen 42 mins ago

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


Jan
3
reviewed Approve Analytical proof of the inequality $p^n (1-p\ln p)<1$ where $0<p<1$
Dec
26
reviewed Leave Open Nspire cx CAS - Laplace inverse fails
Dec
17
reviewed Close How to select the right books?
Dec
17
reviewed Close maximal ideal problem
Dec
17
reviewed Leave Closed If $\gcd(a,b) = 1$ then $ab-a-b=na+mb$ has no natural solution.
Dec
17
reviewed Approve can the empty set be an element of a group?
Dec
17
reviewed Approve Proving that each compact operator is bounded
Dec
16
reviewed Close Set of all linear combinations of the vectors is a subspace
Dec
16
reviewed Close Number pattern prediction algorithm
Dec
16
reviewed Close 8th positive odd integer that is an ODD Catalan number?
Dec
16
reviewed Close How to solve $\sin(\arctan((\frac{1}{2}))$
Dec
16
reviewed Looks OK Every Regular Language is a Context Free Language
Dec
16
reviewed No Action Needed Finding representation matrix of $M$*$(K_5)$ above $\mathbb F_2$
Dec
16
reviewed No Action Needed Eigenvalue inequalities for Hermitian matrices
Dec
16
reviewed Leave Open Can there be a bijection between a countably infinite set and an uncountably infinite set?
Dec
16
reviewed Close Complex Analysis analytic function 1$f(z)=z$
Dec
8
reviewed Leave Closed Is possible to determine the biggest number in universe?
Dec
8
reviewed Delete For what $n$ is $n! = 2^8\cdot3^4\cdot5^2\cdot7$?
Dec
8
reviewed Leave Open Zeta and Gamma function regularization with $\omega=1/0$
Dec
8
reviewed Close Function continuous at irrationals and discontinuous at rationals