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qkqh
  • Member for 13 years, 6 months
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4 votes
2 answers
2k views

A homology of p-covering space

4 votes
0 answers
209 views

Image of the mapping class group of surfaces into automorphism group?

2 votes
0 answers
137 views

Term and theories about "relation-free" elements in a group?

2 votes
0 answers
139 views

Image of the pure braid group under the Artin presentation into the automorphism group of the nilpotent quotient of a free group?

2 votes
2 answers
1k views

quotient groups of the lower central series of a free group

2 votes
1 answer
509 views

Commutator with a generator of a free group

2 votes
1 answer
504 views

Do commutator functor and intersection commute?

2 votes
1 answer
565 views

injectivity of pushout?

1 vote
1 answer
293 views

When $[G_k,G_m] = G_{k+m}$?

1 vote
1 answer
1k views

Any subgroup of f.g. free group with finite index contains a term of lower central series?

1 vote
3 answers
578 views

Is $\mathbb{Z}_p$ flat $\mathbb{Z}_pG$-module for a finite $p$-group $G$?