Inequalities involving Absolute Values
56315
Prove $\frac{|a+b|}{1+|a+b|}<\frac{|a|}{1+|a|}+\frac{|b|}{1+|b|}$.
156555
Inequality $\sqrt{1+x^2}+\sqrt{1+y^2}+\sqrt{1+z^2} \le \sqrt{2}(x+y+z)$
125077
what is the absolute value of a set?
104272
Inequality of $\vert \text{tanh}(x)-x+\frac{x^3}{3}\vert\leq\frac{1}{8}$ for $x\in[-1/4,1/4]$
76209
Inequalities for combinations of $\int f $ and $\int (1/f)$ where $m\le f\le M$ on an interval
136290
a mathematical problem on inequalities
102019
How to solve inequality $1-\frac{1}{x}\geq 0$ correctly?
61939
Induction of inequality involving AP
106979
Prove the inequality and limitation
99644
Finding an Upper Bound on This Inequality
5430
Using Cauchy's integral theorem to prove a inequality
104603
Integer program in which at least one of three inequalities holds
56623
Stuck trying to prove an inequality
77026
Proof with inequalities
106316
Finding a bound on the maximum of the absolute value of normal random variables
150427
Inequality involving Euler-Mascheroni constant
94494
What are the most popular techniques of proving inequalities?