106385 SEMINAR IN TOPOLOGY 2

WINTER SEMESTER 2017/18

General Online Resources

• Henry Wilton's Notes on CAT(0) Cube Complexes
• A course on geometric group theory, again by Henry Wilton, that was blogged.
• A seminar at Cornell led by Tim Riley that was blogged.
• Another seminar with more of a combinatorial group theory flavor. It is in memory of the late Gilbert Baumslag.

Specific Recommended reading:

Part 1: Residual Finiteness and Subgroup Separability

A blog entry discussing residual finiteness and Hopfian groups.

A blog entry discussing Marshall Hall's theorem for free groups.

A different blog entry discussing residual finiteness.

A blog entry discussing subgroups separability.

Specifically sections 2 and 3 of Henry Wilton's Notes

The comprehensive text that gives full and extensive detail. Available in all good libraries. Don't buy it with your own money.

Part 3: CAT(0) Cube Complexes, Sageev's Dual Cube Complex Construction, and Virtual Specialness

Wise and Hruska's general account of the dual cube complex machinery.

Michah Sageev's PCMI notes. A good exercise is to realise that the language of pocsets gives the same outcome as the wallspace terminology.