A survey of stack-sorting disciplines.
The permutation classes equinumerous to the smooth class.
On a balanced property of derangements.
A combinatorial proof of the log-concavity of a famous sequence counting permutations.
Generalized descents and normality.
The influence of symmetry on the probability of assembly pathways for icosahedral viral shells.
An infinite antichain of permutations.
On divisibility of Narayana numbers by primes.
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