Max & inflection point in the principle of least action
40211
Type of stationary point in Hamilton's principle
87536
Supremum of the infimum
75009
$A = \bigcap_{\mathfrak{p} \in \text{Spec(A)}} A_{\mathfrak{p}} = \bigcap_{\mathfrak{m} \in \text{MaxSpec(A)}} A_{\mathfrak{m}}$
138720
Minimum principle in Hilbert space
65827
When $\min_{x \in X,y \in Y} f(x,y) = \min_{x \in X} \min_{y \in Y} f(x,y)$?
114786
Question about Infimum. (conclusion about intersection)
89379
Finding local maximum and minimum
93576
Convex combination of extreme points
93076
When $\min \max = \max \min$?
158704
How to minimize $\sum_{i=1}^p (y_i-x_i)^2$ with constraints $\sum_{i=1}^p y_i - 1 =0$ and $\forall i=\overline{1,p}:-y_i \le 0$?
95759
Lower Semicontinuity Concepts
93314
At what point is the curvature of $y=-\ln(x)$ maximal?
129399
Maximum module principle
34325
Minimizing $\sum_{i=1}^n \max(|x_i - x|, |y_i - y|)$ - Sum of Max of Absolute Values
105768
Proof involving absolute value and maximums
129161
The minimum perimeter and maximum height of a triangle under constraints
101888
Least action principle : is $ \delta \frac{dx}{dt} = \frac{d \delta x}{dt} $ always true?