Hoffman & Kunze exercise
121802
Prove that every self-adjoint unitary linear operator can be expressed in the form $U\alpha = \beta - \gamma$
16220
Folland, "Real Analysis", Chapter 5.3, Exercise 36.
132346
a linear algebra multiple choice problem
79782
Exercising an option without paying for the underlying
8456
Prove that $SL(2,\mathbb{R})$ acts transitively on the upper half plane
147275
Finding a Eulerian Tour
86826
Almost a Vandermonde matrix
28645
Alice and Bob play the determinant game
24472
Graphs of the motions - physical
15152
Playing with Matrix falling code in Mathematica
96344
Combination with repetitions.
67150
Index with exercise numbers
65873
A proof for Atiyah-Macdonald Exercise I.21.iii
118029
Pumping Lemma Excercise
52470
Spivak's Calculus - Exercise 4.a of 2nd chapter
110472
Existence of a Pivot Point in Euclidean Geometry
156877
Rank-one perturbation proof