105,248 reputation
694191
bio website von-eitzen.de/math/tntrep.xml
location Bonn, Germany
age 48
visits member for 1 year, 10 months
seen 29 mins ago

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


1d
revised Primary school math regarding circles
added 148 characters in body
2d
revised Intersection of an Infinite Indexed Family of Sets
added 1 character in body
Jul
8
revised $[0, 1)$ and $S^1$ not homeomorphic?
deleted 2 characters in body
Jul
5
revised Free objects are generated by the image of the canonical injection
added 149 characters in body
Jul
3
revised No. of ways to arrange 4R and 3L so that there is exactly 4 times change from L to R or R to L.
added 244 characters in body
Jul
3
revised Factor n=59305397 given that $ p-q \le 10 $
added 491 characters in body
Jul
3
revised Find all the functions $f:\mathbb{R}→\mathbb{R}$ such that $f(mx+c)=mf(x)+c$
added 22 characters in body
Jul
2
revised Proof for Concrete Mathematics 3.24
added 4 characters in body
Jul
1
revised Using absolute values when determining distance between two points.
added 3 characters in body
Jun
29
revised hom and exact sequence
added 238 characters in body
Jun
29
revised Find a bound on the real zeros of the polynominal function.
added 1267 characters in body
Jun
29
revised Understanding a definition for vector-spaces
added 124 characters in body
Jun
28
revised Dice rolling problem
added 15 characters in body
Jun
24
revised Proof that irrational exponents exist, and are unique?
Typos
Jun
22
revised Number of real roots ,eh!!
added 54 characters in body
Jun
19
revised Proof about isometries
added 62 characters in body
Jun
19
revised $T: V \rightarrow V$ a linear transformation such that $T^2 = I$ and $H_1= \{v \in V | T(v) = v\}\ $ and $H_2= \{v \in V|T(v) = -v\}\ $
The intersction is the zero-dimensional space, not the empty set
Jun
8
revised Field homomorphism into itself
added 352 characters in body
Jun
1
revised What is the largest integer with only one representation as a sum of five nonzero squares?
added generalization
May
31
revised What is the largest integer with only one representation as a sum of five nonzero squares?
rearranged and straightened the argumentation