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CatsAndDogs
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10
Olympiad Geometry Problem about Pentagon Inscribed in Circle
Dec 18, 2023
5
Olympiad Number Theory Problem GCD
Dec 18, 2023
3
Show that $f(x) = \sum_{k=0}^{\infty}{\frac{\sin^2(kx)}{1+k^2 x^2}}$ uniformly converges.
Feb 10, 2023
3
Olympiad Trapezoid Problem about Lengths
Dec 18, 2023
3
Olympiad Combinatorics Coin on Boards Question
Dec 18, 2023
3
Invariant Properties of Isomorphic Rings
Jun 17
2
If an orthogonal matrix represents a reflection, show that it is symmetric. [closed]
Nov 15, 2022
1
A question about double limits
Aug 13, 2022
1
Show that the equation of the plane containing three non-collinear points with position vectors a, b, c is r · (a ∧ b + b ∧ c + c ∧ a) = [a, b, c]
Oct 29, 2022
1
Random Walk around six rooms,
Nov 7, 2022