Timeline for Modular representations
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Mar 1, 2017 at 13:03 | comment | added | Dipendra Prasad | know. I know for PGL(2,F_p), there is a unique irreducible rep'n with this property (of dim = p-1, a cuspidal representation) so your answer is best possible for the moment. | |
| Mar 1, 2017 at 13:01 | comment | added | Dipendra Prasad | Thank you Nate for this beautiful argument. It answers my initial question for which group there are nontrivial irreducible representations whose reduction mod p contains the trivial representation. You answer says `always' if p divides the order of the group. This is what I was hoping to | |
| Feb 28, 2017 at 19:04 | history | answered | Nate | CC BY-SA 3.0 |