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revised Number theory, prime numbers
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May
18
revised Matrices over $\mathbb{Q}[x,y,z]$ which are not equivalent
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May
11
revised Three planes in general position, one point in each, construct sections
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May
11
revised Three planes in general position, one point in each, construct sections
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May
8
revised How to prove the cubic formula without root extraction
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May
7
revised How to prove the cubic formula without root extraction
added 61 characters in body
May
7
revised How to prove the cubic formula without root extraction
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May
7
revised How to prove the cubic formula without root extraction
deleted 208 characters in body
May
7
revised How to prove the cubic formula without root extraction
added 136 characters in body
May
3
revised How prove this systems-equation has least two postive integers solution
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May
3
revised How prove this systems-equation has least two postive integers solution
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May
2
revised How prove this systems-equation has least two postive integers solution
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May
2
revised How prove this systems-equation has least two postive integers solution
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Apr
21
revised For $n \ge 2$ , does every linear operator on $\mathbb R^n$ has an invariant subspace of dimension $2$ ?
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Apr
12
revised measure of a set invariant by rational translation
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Apr
7
revised Integer induction without infinity
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Apr
5
revised For $n \ge 2$ , does every linear operator on $\mathbb R^n$ has an invariant subspace of dimension $2$ ?
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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?
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Mar
30
revised Multiplying three factorials with three binomials in polynomial identity
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