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Apr
12
revised measure of a set invariant by rational translation
added 886 characters in body
Apr
7
revised Integer induction without infinity
added 19 characters in body
Apr
5
revised For $n \ge 2$ , does every linear operator on $\mathbb R^n$ has an invariant subspace of dimension $2$ ?
added 136 characters in body
Apr
3
revised Prove that $g(x)=\frac{\ln(S_n (x))}{\ln(S_{n-1}(x))}$ is increasing in $x$, where $S_{n}(x)=\sum_{m=0}^{n}\frac{x^m}{m!}$
deleted 11 characters in body
Apr
2
revised there exists set $A=\{n_{1},n_{2},\cdots,n_{k}\},k\ge 4,n_{k}\in N^{+}$, such that $a_{n_{1}},a_{n_{2}},\cdots,a_{n_{k}}$ be an arithmetic sequence?
added 14 characters in body
Mar
30
revised Multiplying three factorials with three binomials in polynomial identity
deleted 63 characters in body
Mar
30
revised Prove that $g(x)=\frac{\ln(S_n (x))}{\ln(S_{n-1}(x))}$ is increasing in $x$, where $S_{n}(x)=\sum_{m=0}^{n}\frac{x^m}{m!}$
deleted 85 characters in body
Mar
28
revised Let $(M,d)$ be a compact metric space and $f:M \to M$ such that $d(f(x),f(y)) \ge d(x,y) , \forall x,y \in M$ , then $f$ is isometry?
added 1 character in body
Mar
19
revised Recognize or interpret this involution : $\frac{\prod_{x\neq i}(1-a_xa_j)}{\prod_{y\neq j}(a_j-a_y)}$
edited title
Mar
17
revised Certain products of mostly diagonal matrices are nonzero
edited body
Mar
16
revised Large product of matrices equal zero but not small ones
added 18 characters in body
Mar
16
revised When is this sum of perfect powers bounded
deleted 154 characters in body
Mar
10
revised When is this sum of perfect powers bounded
added 289 characters in body
Mar
6
revised When is this sum of perfect powers bounded
added 94 characters in body
Mar
6
revised Simple Finite Continued Fraction
added 660 characters in body
Mar
4
revised Simple Finite Continued Fraction
added 4 characters in body
Feb
26
revised Concentric Equilateral Triangles
added 33 characters in body
Feb
10
revised If $abc=1$ then $\sum_{cyc}^{}{\frac{1}{b(a+b)}}\ge \frac{3}{2}$
added 1 character in body
Feb
2
revised Upper bound on function defined by induction involving divisions by two
edited body
Jan
23
revised Can the natural proof of this algebraic identity be simplified?
edited tags