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3 votes
1 answer
321 views

Can we relate the character of the permutation representation of $G$ on the cosets $G/\langle g_i\rangle$ to the number of cycles of $g_i$?

Let $G$ be a finite group generated by permutations $g_1,\dots,g_s$ such that $g_1g_2\cdots g_s$ is the identity permutation. The corresponding Hurwitz representation $V_{\text{Hur}}$ has character $$\...
utx7563yu's user avatar
  • 175
5 votes
1 answer
253 views

Irreducible deleted permutation module for a finite group

Let $G$ be a subgroup of the symmetric group $S_n = \operatorname{Sym}(X)$. Let $k$ be a field, and let $V$ be the permutation module corresponding to $X$. Then $V$ is not irreducible, it has a $1$-...
spin's user avatar
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20 votes
3 answers
940 views

What did Frobenius prove about $M_{12}$?

I am interested in this paper which I can't read because it's in German: Frobenius, G., Über die Charaktere der mehrfach transitiven Gruppen., Berl. Ber. 1904, 558-571 (1904). ZBL35.0154.02. A free ...
Nick Gill's user avatar
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16 votes
2 answers
2k views

How do I know if an irreducible representation is a permutation representation?

I have a vague question, a less vague question and a lot of vaguer questions about permutation representations of a finite group $G$. Vague question. Recall that if $G$ acts on a finite set $X$, we ...
PseudoNeo's user avatar
  • 575
16 votes
1 answer
1k views

Tensor power of the natural representation of Sn

The symmetric group $S_n$ acts over $V=\mathbb{R}^n$ by permuting the canonical basis. So it acts over $V^{\otimes p}$ with a diagonal action (acts the same over each element of the tensor product). ...
MarcO's user avatar
  • 583
32 votes
3 answers
3k views

Order of products of elements in symmetric groups

Let $n \in \mathbb{N}$. Is it true that for any $a, b, c \in \mathbb{N}$ satisfying $1 < a, b, c \leq n-2$ the symmetric group ${\rm S}_n$ has elements of order $a$ and $b$ whose product has order $...
Stefan Kohl's user avatar
  • 19.6k