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Group theory front page
A way of getting proper normal subgroups of small index
First pretend that a normal subgroup is trivial
How to determine whether a finitely presented group is finite
How to find groups with given properties
How to solve problems about discrete groups
How to solve problems about finite groups
How to use group actions
Improving a subgroup of finite index by intersecting
Presentations of groups
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Geometric view of Hölder's inequality
Diagonal arguments
Finding an interval for rational numbers with a high denominator
Try to prove a stronger result
Use self-similarity to get a limit from an inferior or superior limit.
Prove a consequence first
Lower degree by increasing dimension (or vice-versa)
Numerical optimization
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