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Results tagged with co.combinatorics
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user 66251
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
2
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1
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269
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A generalization of negative binomial distribution
Assume we have a set of $n$ balls. For each step, we uniformly pick one ball and label it if it is not labeled. Or otherwise move on to next step. I am wondering what is the distribution of number of …
- 61
1
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0
answers
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research on the structure/properties of permutation matrix/table with $(i,j)th$ entry as $\p...
Is there any research on the structure/properties of permutation matrix/table with $(i,j)th$ entry as $\pi_j\circ \pi_i^{-1}$, where $\{\pi_1,\pi_2,...,\pi_{k!}\}=S_k$?
I know if we apply the functio …
- 61