An Extension to a problem of IMO 1986
113221
Vertex of a pentagon-Does the algorithm always stop?
110681
Computing the Smith Normal Form
20816
Inequalities with assumptions and constraints
29954
Hartshorne Exercise II. 3.19 (a)
112362
fixed point problem for orthogonal transformation
122127
An "AGM-GAM" inequality
12291
Two envelope problem revisited
151581
Prerequisite for Milnor Topology from a Differential Viewpoint
110798
Problem using the AM-GM inequality
103780
Independence of disjoint events
57619
Norms Induced by Inner Products and the Parallelogram Law
92763
Optimising $x_1x_2+x_2x_3+\cdots+x_nx_1$ given certain constraints
28927
IMO 1987 - function such that $f(f(n))=n+1987$
137743
Invariance of cross ratio under Möbius transformation and another problem related to cross ratio.
157213
Application of Luca's theorem
99217
Hartshorne's Exercise II.4.5(c). A third time.
80952
A difficult integral evaluation problem