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New posts in functional-inequalities
Can we show that the determinant of this matrix is non-zero?
matrices
vector-spaces
vectors
determinant
functional-inequalities
Weighted Poincare Inequality
functional-analysis
partial-differential-equations
functional-inequalities
Solve $f (x + y) + f (y + z) + f (z + x) \ge 3f (x + 2y + 3z)$
real-analysis
functional-inequalities
An upper bound of binary entropy
entropy
functional-inequalities
How prove this function inequality $xf(x)>\frac{1}{x}f\left(\frac{1}{x}\right)$
analysis
inequality
functional-inequalities
Are there (known) bounds to the following arithmetic / number-theoretic expression?
number-theory
reference-request
functional-inequalities
Prove that $\int_0^1|f''(x)|dx\ge4.$
calculus
real-analysis
inequality
definite-integrals
functional-inequalities
Does this inequality hold true, in general?
number-theory
elementary-number-theory
inequality
functional-inequalities
prove a challenging inequality or find a counterexample to it
real-analysis
functional-inequalities
If $f(x)\leq f(f(x))$ for all $x$, is $x\leq f(x)$?
functions
functional-inequalities
Deducing Inequality from an Equation
discrete-mathematics
inequality
complex-numbers
recurrence-relations
functional-inequalities
What is the maximum value of $\frac{2x}{x + 1} + \frac{x}{x - 1}$, if $x \in \mathbb{R}$ and $x > 1$?
calculus
inequality
functional-inequalities
If $f$ is continuous and $\,f\big(\frac{1}2(x+y)\big) \le \frac{1}{2}\big(\,f(x)+f(y)\big)$, then $f$ is convex [duplicate]
real-analysis
analysis
continuity
convex-analysis
functional-inequalities
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