On a pentagon, why is the maximal value of a function that is linear in x, y and z on one of the vertices?
66913
Why does the maximum/minimum of linear programming occurs at a vertex?
151326
Concurrency of the heights of a tetrahedron with opposite edges perpendicular.
135863
Is the graph of a continuous function homeomorphic to its domain?
122691
Graphs of Linear Inequalities
43419
At unique critical point, does local max imply global max?
47075
Multivariable Gauss's Lemma
122300
Maximizing a quadratic function subject to $\| x \|_2 \le 1$
95340
Locally bounded additive function is linear
88580
Finding the maximum value of $\int_0^1 f^3(x)dx$
20614
Example of a function such that $\varphi\left(\frac{x+y}{2}\right)\leq \frac{\varphi(x)+\varphi(y)}{2}$ but $\varphi$ is not convex
149544
maximum of monic polynomial on unit circle is 1 implies $p(z)=z^n$
114458
$f$ is entire and maps a rectangle to a rectangle, then $f$ is linear
88956
For any three vectors $x,y,z\in\mathbb{R}^d$, we have $ \|y-z\|\cdot\|x\|\leq\|x-y\|\cdot\|z\|+\|z-x\|\cdot\|y\|$
111809
Maximizing a linear function over an ellipsoid
113221
Vertex of a pentagon-Does the algorithm always stop?
115954
how to find maximal linearly independent subsets
44724
Intuition Behind Maximum Principle (Complex Analysis)