Revision history of "Groups Acting on Posets"

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  • curprev 21:19, 3 December 2012‎ Tedyun talk contribs‎ 9,794 bytes +9,794‎ Created page with "$S_n$ acting on the partition lattice $\pi_n$. The number of orbits are $A_{n-1}$, the Euler number. Questions: * Find $\beta_S(n)$ for the $S_n$-"quotient" poset of $\pi_n$ ..."
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