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比利时vs摩洛哥足彩
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比利时vs摩洛哥足彩
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university of california san diego
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math 269 - combinatorics
jeff liese
ucsd graduate student
classifying descent and ascents modulo k
abstract:
given any fixed integer $k > 1$, one can ask to find formulas for the number of permutations whose descent pairs satisfy certain conditions mod k. we will survey a number of results on these type of questions and we will show that number of remarkable identities emerge from this study.
host:
february 21, 2006
3:00 pm
ap&m 7321
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