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5 Function which creates the sequence 1, 2, 3, 1, 2, 3, … Mar 7 '18
4 Expected Number of Single Socks when Matching Socks Jul 7 '17
1 Functions that are always less than their derivatives Jul 29 '17
1 How do I convince my students that the choice of variable of integration is irrelevant? Jan 21 '14
1 What is the geometrical action of a skew-symmetric matrix on an arbitrary vector? Sep 1 '16
1 sinc in 2d: how to interprete this in spatial domain? Aug 15 '18
1 Why is the number of ways of choosing $0$ items from $n$ items $1$? Oct 23 '18
1 Is it possible to calculate a single frequency bin in $O(\log N)$ time (considering the $N\log N$ performance of FFT algorithms)? Sep 7 '19
1 Does a matrix of rank $r$ always contain an invertible submatrix of size $r\times r$? Aug 27 '20
1 What are the interesting applications of hyperbolic geometry? Feb 12
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