Timeline for The number of irreducible projective characters with associated factor set of any finite group
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| May 5, 2014 at 22:13 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
Tried to clarify exactly when the inequality becomes strict to answer Jack Schmidt's question
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| May 5, 2014 at 22:09 | comment | added | Jack Schmidt | I didn't understand it the first time, but the second time you told me it was perfectly clear (and your edit is perfectly clear). The Burnside/Gallagher remarks are just FYI, so I'll delete those too. Thanks for helping me understand projective characters. Grouping them by lambda instead of alpha makes more sense to me. | |
| May 5, 2014 at 22:07 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
Tried to clarify exactly when the inequality becomes strict to answer Jack Schmidt's question
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| Apr 28, 2014 at 14:01 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
added 43 characters in body
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| Apr 28, 2014 at 13:54 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
Added explanation
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| Apr 28, 2014 at 13:36 | comment | added | A.L. Prins | Please ,Geoff I tried to find some references as you suggested, but was not successful. Perhaps you will be more fortunate to find at least one valid reference. | |
| Apr 25, 2014 at 9:17 | comment | added | Geoff Robinson | It is somewhere in Burnside's book "Theory of groups.." that $\sum_{\chi} \frac{\chi(g)}{\chi(1)}$ is non-zero if and only if $g$ is a commutator, and is positive if $g$ is a commutator. For the other question, maybe work of P.X. Gallagher ( or is it Gallacher?). It is "well-known" to specialists. | |
| Apr 25, 2014 at 8:33 | comment | added | user50002 | Geoff Robinson answer my question which I asked on the 12 April 2014. Please, Geoff can you give me the reference to the inequality Burnside proved. Also, you mentioned the answer to my question is a known fact, so can you supply me with some references where they proved it. | |
| Apr 13, 2014 at 18:47 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
expanded, clarified
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| Apr 13, 2014 at 18:40 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
corrected minor typo
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| Apr 12, 2014 at 20:50 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
added 61 characters in body
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| Apr 12, 2014 at 20:36 | history | edited | Geoff Robinson | CC BY-SA 3.0 |
clarified
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| Apr 12, 2014 at 19:12 | history | answered | Geoff Robinson | CC BY-SA 3.0 |