feat(group_theory/presented_group): define presented groups #1118
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define group conjugates and normal closure
Presented groups are defined as a quotient of a free group by the normal subgroup the relations generate.
Presented groups are defined as a quotient of a free group by the normal subgroup the relations generate
khoek
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khoek
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(mergify uses the title for the commit message, I think) |
Michael-Howes
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semorrison
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Jun 7, 2019
khoek
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Jun 7, 2019
Co-Authored-By: Keeley Hoek <keeley@hoek.io>
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I've now added the definition of |
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…er-community#1118) * feat(group_theory/conjugates) : define conjugates define group conjugates and normal closure * feat(algebra/order_functions): generalize strict_mono.monotone (leanprover-community#1022) * trying to merge * feat(group_theory\presented_group): define presented groups Presented groups are defined as a quotient of a free group by the normal subgroup the relations generate. * feat(group_theory\presented_group): define presented groups Presented groups are defined as a quotient of a free group by the normal subgroup the relations generate * Update src/group_theory/presented_group.lean Co-Authored-By: Keeley Hoek <keeley@hoek.io> * Uniqueness of extension * Tidied up to_group.unique * Removed unnecessary line * Changed naming
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