9I制作厂免费

Event

Brahim Abdenbi (9I制作厂免费)

Wednesday, February 7, 2018 15:00to16:00
Burnside Hall Room 920, 805 rue Sherbrooke Ouest, Montreal, QC, H3A 0B9, CA

Title: Mineyev-Dicks Proof of the Hanna Neumann Conjecture.

Abstract: Let F be a free group. If H and K are two finitely generated subgroups of F, then their intersection is also finitely generated. The Hanna Neumann Conjecture (HNC) is a statement relating the ranks of H and K to the rank of their intersection. It was posed by Hanna Neumann in 1957 and proved in 2011 by Joel Friedman and independently by Igor Mineyev. Both proofs were subsequently simplified by Warren Dicks. I will present the Mineyev-Dicks version of the proof.

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