An inequality concerning the sides of convex quadrilateral
73799
In a convex Quadrilateral ABCD, $\measuredangle ABC = \measuredangle BCD = 120^{\circ}$.Prove that: $ AC + BD \ge AB + BC + CD$
30044
Inequality with triangle sides
126032
Proving a certain inequality
49783
A possible inequality related to binomial theorem (or, convex/concave functions)
57514
The Minkowski sum of two convex sets is convex
138099
A cyclic inequality $\sum\limits_{cyc}{\sqrt{3x+\frac{1}{y}}}\geqslant 6$
86305
A secant inequality for convex functions
60887
$d_A(x) = \inf_{a \in A} \|x-a\|$ is convex if and only if $A$ is convex
57096
Show that $\max{\{|a|+|b|,|c|+|d|\}} \leq \max{\{|a|,|c|\}}+\max{\{|b|,|d|\}}.$
44823
Prove the general arithmetic-geometric mean inequality
84122
Convex Quadrilateral Test
97584
How to prove this property using convexity?
138959
On the equality case of the Hölder and Minkowski inequalities
40438
Proving that closed (and open) balls are convex
36371
Exercise on convex functions
95901
Inequality similar to the Schwarz-Pick theorem
99820
symetric inequality for a rational function of three variables