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If you have any good math exercises to share feel free to contribute them on http://exwiki.org


Dec
11
accepted Average number of linear factors in a monic polynomial of degree $n$ over $\mathbb{F}_p$
Nov
21
accepted Determinant of the Kronecker product involving the identity
Nov
11
accepted Number of words not having a subword of length k with only one letter
Sep
23
accepted counting occurence of subgraphs by counting their occurence in larger subgraphs
Aug
26
accepted Graph with small average degree has two vertices of small degree
May
29
accepted $n^n$ cannot be expressed as a recurrence with polynomial coefficents
Apr
12
accepted Primality of the number of obtained by concatenating the n consecutive digits
Apr
6
accepted Relating the number of partitions with ordered blocks
Apr
3
accepted Obtaining a linear recurrence from differential equation
Mar
31
accepted Conjugacy classes of a subgroup of index 2.
Jan
24
accepted A question about the interlacing of symmetric matrices (graph interlacing)
Jan
21
accepted Commuting matrices and simultaneous diagonalizability
Nov
16
accepted Equal parity of inversions and transpositions
Nov
13
accepted Minimizing a specific function over n variables
Sep
4
accepted A variant of the Schwartz–Zippel lemma
Aug
23
accepted A summation identity over prime fields
Aug
21
accepted bounding the number of zeros for a multivariate polynomial
Aug
20
accepted Combinatorial interpretation of Fermat's Last Theorem
Jun
14
accepted Lower bound for the number of coin weightings
Jun
5
accepted Modeling the coin weighting problem