Tom Leinster

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Name Tom Leinster
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Bizarre operation on polynomials

jan 21 10 at 4:37 Gjergji Zaimi 37.4k●2●72●149

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5
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Why are abelian groups amenable?

jan 9 at 11:35 Theo Buehler 3,666●1●11●25

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2
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What are the algebras for the double dualization monad?

aug 16 at 16:50 Todd Trimble 22.3k●1●62●96

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134

Answers
votes newest views recent
65
Best online mathematics videos?
61
What properties make $[0,1]$ a good candidate for defining fundamental groups?
47
when is A isomorphic to A^3? (2)
45
When are two proofs of the same theorem really different proofs
44
Cures for mathematician’s block (as in writer’s block)
43
Taking lecture notes in lectures
38
Theorems for nothing (and the proofs for free)
33
What is a metric space?
31
What is the name for the following categorical property?
30
How do I check if a functor has a (left/right) adjoint?
25
Combinatorial results without known combinatorial proofs
23
Continuous function from $[0,1]$ to $[0,1]$
23
What’s a magical theorem in logic?
22
Google question: In a country in which people only want boys
20
Citation of a paper with a proof you would like to improve
20
What are the benefits of viewing a sheaf from the “espace étalé” persepctive?
18
motivation of filtered colimits (2)
17
Can epi/mono for natural transformations be checked pointwise?
16
“Philosophical” meaning of the Yoneda Lemma
16
What’s a groupoid? What’s a good example of a groupoid?
16
Coend computation
15
Extending arithmetic functions to groups (2)
14
“Functors between monads”: what are these really called?
14
Is a functor which has a left adjoint which is also its right adjoint an equivalence ?
13
Terminology in category theory
13
How to distinguish between natural and unnatural equivalences of categories
13
Recovering a monoidal category from its category of monoids
13
Does the category Monoid of monoids have finite coproducts?
13
What properties “should” spectrum of noncommutative ring have?
13
What is Yoneda’s Lemma a generalization of?
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