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Apr
9
revised (Edited Duplicate) Let $(x_{n_n})$ be a sequence of positive real number that has no convergent subsequence. Show lim $x_n$ = +$\infty$
deleted 2 characters in body; edited title
Mar
22
revised When does $az + b\bar{z} + c = 0$ represent a line?
Conditions are just enough.
Mar
21
revised Is continuous and integrable function bounded?
English
Mar
8
revised Show that a finite group with certain automorphism is abelian
Adding source.
Mar
1
revised Why does this converge to $\|x\|$
added 60 characters in body
Mar
1
revised Why does this converge to $\|x\|$
added 2 characters in body
Mar
1
revised Why does this converge to $\|x\|$
added 2 characters in body
Feb
4
revised composition of two measurable function
added 4 characters in body
Feb
1
revised How to prove the following recursive sequence produce relatively prime numbers
added 2 characters in body
Dec
11
revised $\lim_{p\to \infty}\Vert f\Vert_{p}=\Vert f\Vert_{\infty}$?
added 5 characters in body; edited title
Dec
6
revised Prove that $f $ is constant
edited title
Nov
28
revised How do I find the characteristic polynomial and eigenvalues?
deleted 4 characters in body
Nov
26
revised Verifying an equivalence relation
Formatting
Nov
26
revised Verifying an equivalence relation
added 7 characters in body
Nov
13
revised $A\in M_2(\mathbb C)$ and $A $ is nilpotent then $A^2=0$.How to prove this?
added 39 characters in body
Nov
12
revised Suppose $\{f_k\}$ is a sequence of $M$-measurable functions on $X$. Let $p_1$ and $p_2\in [1,\infty)$, and suppose $f_k\in L^{p_1}\cap L^{p_2}$.
added 1 character in body
Nov
12
revised Is there a simpler proof that $f(x,y,z) = 4x + 11y + 18z$ is surjective?
Formatting
Nov
10
revised Composition of measureable function with continuou function in $L^2[0,1]$
Formatting.
Nov
5
revised Give a counterexample to show that $(AB)^{-1} \neq A^{-1}B^{-1}$
edited title
Nov
4
revised Prove that g(y)>0 for all y in the real numbers
This has nothing to do with proof theory.