13,028 reputation
11657
bio website go.helms-net.de
location Kassel, Germany
age 61
visits member for 4 years, 2 months
seen 1 hour ago

Mathematics is only a hobby - although I have done undergrad courses in the 70s. But part of my job was doing statistics and this kept me near my favourite subject "linear algebra" (programmed factor-analysis and a matrix-orientated calculator MatMate). Around 2002 I came in contact with the internet community in math newsgroups and could improve my Collatz discussion. Next subject was the Bernoulli numbers, then integer matrices and since 2006 the problem of iterated exponentiation aka tetration. Serving half-time jobs in teaching here at the university I found time to fiddle with that subjects in depth - and found love with the exploratory approach and impulse of the 18'th century numbertheory, namely L. Euler, "the master of us all"... Due to lack of formal education I've to do my "research" widely on my own - but that's what I just like: to find structure, pattern, laws from the ground.


Nov
19
answered How to find the integer solutions of $\frac{2^m-1}{2^{m+x}-3^x}=2a+1$?
Nov
10
asked My (divergent) summation of the zetas with sets of cofactors give systematically errors of simple integer differences. What am I missing?
Nov
6
answered How to factor this rational expression?
Oct
31
answered Periodocity of $a^{pn+q}$ mod $m$
Oct
25
answered Explain $x^{x^{x^{{\cdots}}}} = \,\,3$
Oct
24
answered $f\left(x + \frac1x\right)= x^3+x^{-3},$ find $f(x)$
Oct
19
answered Do these series converge to logarithms?
Oct
11
answered Number of possible cycles in collatz conjecture
Sep
30
answered Evaluation of a class of continued fractions
Sep
29
answered how to get $ f(x) $ if we know $ f(f(x))=x^2+x $
Sep
28
answered how to get $ f(x) $ if we know $ f(f(x))=x^2+x $
Sep
26
answered alternating sum of zeta functions minus one is one half
Sep
24
answered Recurrence Question about $T(n) = T(\frac n2) + nlog(n)$
Sep
19
answered Why is variance squared?
Sep
18
asked Does a generalization of the Teichmuller-character for non-prime arguments exist?
Sep
12
answered Iteration of $x \to x^x$
Sep
10
answered What is $\cdots ((((1/2)/(3/4))/((5/6)/(7/8)))/(((9/10)/(11/12))/((13/14)/(15/16))))/\cdots$?
Sep
10
answered Using Pascal's Triangle for Binomial Expansion.
Sep
3
answered How is the formal inverse of a power series with constant term developed ( for instance $\cosh^{-1}(x)$)?
Sep
2
answered Outline approach to Collatz 3n+1 conjecture / Criticism needed