bio | website | |
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visits | member for | 3 years, 4 months |
seen | Jan 7 '13 at 14:37 | |
stats | profile views | 83 |
Jan 4 |
comment |
Order of elements
This is the famous "r-s-t" problem assigned to first year graduate students at the University of Chicago out of Alperin-Bell, which intentionally contains many highly nontrivial problems mixed among the easy ones, older grad students are sworn to secrecy as to which are which. We all spent hours trying to solve it inside the symmetric group using multiple different special cases. Only one or two students in history were known to get it correct, and it is easier to do inside PSL. It saddens me to see the answer posted here. |
Nov 20 |
awarded | Nice Answer |
Sep 20 |
comment |
Non-isomorphic finite simple groups
The $A_8 \cong GL(4,2)$ example is well-known at the University of Chicago where it's an exercise in Alperin-Bell, the idea being students shouldn't know if an exercise is hard or easy in advance. That and the famous "rst" problem have tormented many a 1st year grad student. |
Jun 19 |
answered | Order of automorphism of Projective special linear group |
Jun 19 |
awarded | Critic |
Jun 14 |
comment |
searching for text for studying representation theory
I taught a 1-semester class for seniors/1st year grad students out of this book and they all really enjoyed it. It should be very suitable for self study as well. |
Jun 12 |
comment |
Heuristic argument that finite simple groups _ought_ to be “classifiable”?
Can someone explain the mysterious last sentence in this answer? |
May 30 |
answered | When (if ever) disclose your identity as a reviewer? |
Feb 24 |
awarded | Supporter |
Feb 24 |
answered | indecomposable modules of the symmetric group |
Feb 20 |
awarded | Editor |
Feb 20 |
revised |
Restrictions of Modules and Dimensions
deleted 4 characters in body |
Feb 20 |
answered | Restrictions of Modules and Dimensions |
Jun 29 |
awarded | Necromancer |
Jun 15 |
awarded | Teacher |
Jun 15 |
answered | What are some examples of colorful language in serious mathematics papers? |