User Đào Thanh Oai

0 votes

2 answers

378 views

A symmetric polynomial inequality

asked Jul 17, 2018 at 12:19

0 votes

1 answer

169 views

Is $k(|a_1|+|a_2|+...+|a_n|) \le |b_1|+|b_2|+...+|b_n|+k|S|$ right?

asked Jun 23, 2019 at 12:03

0 votes

1 answer

109 views

An triangle inequality $\sum_{i=1}^n b_i^\alpha \ge \sum_{i=1}^na_i^\alpha $ if $\alpha >1$

asked Jun 17, 2019 at 14:18

0 votes

1 answer

140 views

Rearrangement inequality for sum

asked May 30 at 2:25

0 votes

1 answer

232 views

Divide angles by coefficients relate to Fibonacci sequence

asked Jun 19 at 15:06

0 votes

1 answer

151 views

Inequality $(a_1^x+a_2^x+\cdots+a_n^x)^y \ge (a_1^y+a_2^y+\cdots+a_n^y)^x$

asked Aug 26 at 2:06

-1 votes

2 answers

320 views

A Erdős–Mordell Like inequality

asked Sep 25, 2019 at 9:09

-2 votes

1 answer

260 views

Is the conjecture $min(A,B) \le rad(ABC)$ new and correct? [closed]

asked Aug 23, 2019 at 17:40

-2 votes

1 answer

587 views

Is the conjecture true for n-sphere $(n>2)$? [closed]

asked Jul 26, 2018 at 8:12

-3 votes

1 answer

392 views

A generalization of Chebyshev's sum inequality

asked Jul 21, 2018 at 4:45

-3 votes

2 answers

261 views

The inequality $\Pi (1-\frac{1}{a_i})^{x_i} \le \Pi (1-\frac{1}{b_j})^{y_j} $ hold? [closed]

asked Oct 10, 2019 at 1:48

-4 votes

1 answer

229 views

A generalization Bertrand's postulate [closed]

asked Jun 15, 2021 at 10:43

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102 Questions

A symmetric polynomial inequality

Is $k(|a_1|+|a_2|+...+|a_n|) \le |b_1|+|b_2|+...+|b_n|+k|S|$ right?

An triangle inequality $\sum_{i=1}^n b_i^\alpha \ge \sum_{i=1}^na_i^\alpha $ if $\alpha >1$

Rearrangement inequality for sum

Divide angles by coefficients relate to Fibonacci sequence

Inequality $(a_1^x+a_2^x+\cdots+a_n^x)^y \ge (a_1^y+a_2^y+\cdots+a_n^y)^x$

A Erdős–Mordell Like inequality

Is the conjecture $min(A,B) \le rad(ABC)$ new and correct? [closed]

Is the conjecture true for n-sphere $(n>2)$? [closed]

A generalization of Chebyshev's sum inequality

The inequality $\Pi (1-\frac{1}{a_i})^{x_i} \le \Pi (1-\frac{1}{b_j})^{y_j} $ hold? [closed]

A generalization Bertrand's postulate [closed]