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May 5, 2014 at 22:15 history edited Geoff Robinson CC BY-SA 3.0
typo fixed
May 4, 2014 at 20:20 comment added Jack Schmidt The other questions are mathoverflow.net/questions/165132/… and math.stackexchange.com/questions/779460/…
May 3, 2014 at 15:49 comment added A.L. Prins The following is just a follow up to my previous question. I have a finite group $H$ with 14 ordinary characters. The Schur multiplier $M(H) \cong 2^2$. Hence the group $H$ will have 3 sets of projective characters with non-trivial factor sets $\alpha_i^{-1}$ of order 2, $i =1,2,3$. How to I prove that the cardinality of each of the three sets of projective characters with factor sets $\alpha_i^{-1}$ cannot exceed $|Irr(H)| =14$ . Perhaps Geoff Robinson can be of help here again.
Apr 12, 2014 at 19:12 answer added Geoff Robinson timeline score: 5
Apr 12, 2014 at 15:29 review First posts
Apr 12, 2014 at 15:40
Apr 12, 2014 at 15:10 history asked A.L. Prins CC BY-SA 3.0