Recognizing a solvable group from its subgroup lattice

Datum / Date: 18.12.17
Čas / Time: 10:00-11:00
Predavalnica / Location: FAMNIT-POŠTA
Predavatelj / Lecturer: Russ Woodroofe (UP FAMNIT)
Naslov / Title: Recognizing a solvable group from its subgroup lattice
Povzetek / Abstract:

The subgroup lattice of a group G is the poset consisting of the subgroups of G, ordered by inclusion.  Can you recognize whether a group is in a class from its subgroup lattice?  For some nice families of groups such as abelian, Hamiltonian, or nilpotent, the answer is “no”; while for other classes such as supersolvable or solvable, the answer is “yes”.  I’ll give several conditions on a subgroup lattice that are equivalent to solvability of the originating group: combinatorial, topological, and commutative algebraic.

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