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


Apr
15
asked Isomorphism of intervals of a distributive lattice
Apr
12
accepted Primality of the number of obtained by concatenating the n consecutive digits
Apr
10
revised Primality of the number of obtained by concatenating the n consecutive digits
edited body
Apr
10
asked Primality of the number of obtained by concatenating the n consecutive digits
Apr
6
accepted Combinatorial species - question about a relation for the number of partitions with ordered blocks
Apr
3
accepted Obtaining a linear recurrence from differential equation
Apr
1
revised Combinatorial species - question about a relation for the number of partitions with ordered blocks
edited body
Apr
1
asked Obtaining a linear recurrence from differential equation
Mar
31
comment Conjugacy classes of a subgroup of index 2.
Thank you for your explanation. Somehow I downvoted your question and I cannot upvote unless you make an edit to this post. Hence could you make a minor change so that I can correct the vote?
Mar
31
accepted Conjugacy classes of a subgroup of index 2.
Mar
30
comment Conjugacy classes of a subgroup of index 2.
Hm.. what exactly do you mean by "all orbits of H\cdot x$ under conjugation with $H$?
Mar
30
revised Combinatorial species - question about a relation for the number of partitions with ordered blocks
edited title
Mar
30
asked Combinatorial species - question about a relation for the number of partitions with ordered blocks
Mar
30
comment Conjugacy classes of a subgroup of index 2.
@GerryMyerson No I don't know that theorem. How can it be applied in this case?
Mar
29
asked Conjugacy classes of a subgroup of index 2.
Mar
24
answered How do I find the adjacency matrix for the nodes of an n-dimensional finite grid?
Mar
10
answered How can I prove that the Wiener index of the hypercube graph is $k \cdot 4^{k-1}$?
Mar
8
revised How to plot the graph of the function $Re(η(s))$
not a question from graph theory
Mar
8
suggested suggested edit on How to plot the graph of the function $Re(η(s))$
Mar
6
answered Number of edges in graphs having two disjoint cycles of equal length