Real Analysis triangle inequality problems
65809
Show that $d_2$ defined by $d_2(x,y)=\frac{|x-y|}{1+|x-y|}$ is a metric
20073
How to fill in inequality where all inequalities overlap
126202
Analysis Question Involving Real Numbers
35867
Squaring sides of an inequality
91131
Question regarding an inequality
61939
Induction of inequality involving AP
27796
inequality of absolute value problem
138959
On the equality case of the Hölder and Minkowski inequalities
96217
If a and b are non-negative real numbers then demonstrate inequality
77576
Using the triangle inequalities to prove a bound in the complex plane
67851
Does $|x|^p$ with $0<p<1$ satisfy the triangle inequality on $\mathbb{R}$?
129161
The minimum perimeter and maximum height of a triangle under constraints
91662
Proof for triangle inequality for vectors
77493
Classic $c_r$-inequality in $l_r$ space: $E(|X+Y|^r)\leq c_r[E(|X|^r)+E(|Y|^r)]$
92934
Triangle inequality for integrals with complex valued integrand
98002
Let $x$ be a positive real number. Inequality problem with $\pi$ and $x$ terms.
137507
triangular series and inequality