When does the equality hold in the triangle inequality?
56954
Equality holds in triangle inequality iff both numbers are positive, both are negative or one is zero
156669
Trying to prove a simple (?) inequality
2635
equality of two operators...
138195
An inequality for arctan$x$
138959
On the equality case of the Hölder and Minkowski inequalities
126032
Proving a certain inequality
106373
Hölder's inequality with three functions
8207
Can I prove this inequality algebraically?
77493
Classic $c_r$-inequality in $l_r$ space: $E(|X+Y|^r)\leq c_r[E(|X|^r)+E(|Y|^r)]$
57938
When do two functions become equal?
92934
Triangle inequality for integrals with complex valued integrand
70926
Showing that for $n\geq 3$ the inequality $(n+1)^n<n^{(n+1)}$ holds
143646
Is it possible to prove reflexive, symmetric and transitive properties of equality and the transitive property of inequality?
20816
Inequalities with assumptions and constraints
147785
Proving inequality $x^xy^y \geq (\frac{x+y}{2})^{x+y}$
131180
When Jensen's inequality is equality
73253
Question About equal signs in Theorems