Michal Opler

activity

20152026

most citedWilf collapse in permutation classes

1 citations · 2 across the 12 of their papers we have counts for

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Showing 2019Show all

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math.CO2019

Two examples of Wilf-collapse

Michael Albert, Vít Jelínek, Michal Opler

Two permutation classes, the X-class and subpermutations of the increasing oscillation are shown to exhibit an exponential Wilf-collapse. This means that the number of distinct enu…

math.CO2019★ 1 cited

Wilf collapse in permutation classes

Michael Albert, Vít Jelínek, Michal Opler

For a hereditary permutation class $C$ , we say that two permutations $π$ and $σ$ of $C$ are Wilf-equivalent in $C$ , if $C$ has the same numb…