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author | Ulli Kehrle <ulli.kehrle@rwth-aachen.de> | 2018-11-08 12:48:17 +0100 |
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committer | Ulli Kehrle <ulli.kehrle@rwth-aachen.de> | 2018-11-08 12:48:17 +0100 |

commit | bfac88769e4788626e3166d7d6f4a3392ac9dbcc (patch) | |

tree | f9d25ad1a6052fabf9d3eba5b53bac1db0c1fc98 | |

parent | af197de3f2f5581ccfbd1810074dbddd2b3a86a0 (diff) | |

download | subgroup-ladders-bfac88769e4788626e3166d7d6f4a3392ac9dbcc.tar.gz subgroup-ladders-bfac88769e4788626e3166d7d6f4a3392ac9dbcc.tar.xz |

README: replace unicode S_n with ascii one.

-rw-r--r-- | README.md | 2 |

1 files changed, 1 insertions, 1 deletions

@@ -5,7 +5,7 @@ The algorithm was described by Bernd Schmalz in [1, Theorem 3.1.1]. Solutions of some problems in group theory can relatively easy be transferred to a sub- or supergroup if the index is small. Let G be a permutation group on the set {1,...,n}. -So one might try to find a series of subgroups G = H_0,...,H_k = Sₙ of the symmetric group S_nsuch that H_{i-1} is a subgroup of H_i for every i and transfer the solution of a problem for the symmetric group step by step to G. +So one might try to find a series of subgroups G = H_0,...,H_k = S_n of the symmetric group S_nsuch that H_{i-1} is a subgroup of H_i for every i and transfer the solution of a problem for the symmetric group step by step to G. Sometimes it is not possible to find such a series with small indices between consecutive subgroups. This is where subgroup ladders may make sense: |