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  • 3 votes cast
Dec
7
revised Stochastic processes and mean permanence time
added 11 characters in body; edited title
Dec
7
asked Stochastic processes and mean permanence time
Dec
5
accepted A conjecture about lines and points in the plane
Dec
5
comment A conjecture about lines and points in the plane
Ok, now I understand that my previous remark is not correct, and both the answers are good
Dec
5
revised A conjecture about lines and points in the plane
added 1 character in body
Dec
5
comment A conjecture about lines and points in the plane
Yes, I think the conjecture is the same, but how to prove it?
Dec
5
comment A conjecture about lines and points in the plane
I am not sure this is sufficient. You proved that for every finite $n$ you can find $n$ points satisying the property $(*)$, but this does not prove that you can find countably many points satisfying $(*)$
Dec
5
asked A conjecture about lines and points in the plane
Nov
24
comment Structure of the space $X:=\{x \subset \mathbb{R}^3: |x| < \infty\}$, where $|x|$ is the cardinality of $x$
I answered you in the main section
Nov
24
revised Structure of the space $X:=\{x \subset \mathbb{R}^3: |x| < \infty\}$, where $|x|$ is the cardinality of $x$
Answer to Daniel Rust
Nov
24
asked Structure of the space $X:=\{x \subset \mathbb{R}^3: |x| < \infty\}$, where $|x|$ is the cardinality of $x$
Oct
15
comment A problem relative to skew-symmetric bilinear forms
$B(u,v)=\sum_{i,j} u^*_j A_{ij} v_i$
Oct
14
revised A problem relative to skew-symmetric bilinear forms
edited title
Oct
14
comment A problem relative to skew-symmetric bilinear forms
The problem is not so symple. Consider for example $v=(1, 1, 1, 1)$, for which $(v, v)=0$.
Oct
14
asked A problem relative to skew-symmetric bilinear forms
Oct
14
awarded  Informed
Jul
2
awarded  Curious
Jan
4
comment Conjecture: the function $d(x, y):=\frac{||x-y||}{\max(||x||, ||y||)}$ is a distance
But this inequality does not seem to be easier to prove than the triangle inequality
Jan
2
comment Conjecture: the function $d(x, y):=\frac{||x-y||}{\max(||x||, ||y||)}$ is a distance
I agree @coffeemath, but we have not yet a rigorous proof, and this is strange, due to the "apparent" semplicity of the problem.
Jan
1
comment Conjecture: the function $d(x, y):=\frac{||x-y||}{\max(||x||, ||y||)}$ is a distance
Yes, I do not think it is a trivial problem