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1213
bio website poisson.phc.unipi.it/~mossa
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visits member for 1 year, 11 months
seen 14 hours ago
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I'm math student, in particular I'm interested in algebra, geometry, topology and category theory (especially higher dimensional category theory) and its application in mathematics.


62 Answers

newest activity votes
13
What are some examples of a mathematical result being counterintuitive?
7
All polynomials in $\Bbb R$ can be factored as a product of polynomials over $\Bbb R$ with degree one or two.
6
The fibres of a map form a partition of the domain.
6
What can we say about the map $G\mapsto \text{Aut}(G)$ on the proper class of all groups?
6
Philosophy or meaning of adjoint functors
6
How to Prove a Programming Language is Turing Complete?
5
On infinite groups that is not Simple
5
Van Kampen theorem to prove all spheres have fundamental group 0.
5
Why are groups more important than semigroups?
4
Is there a ring such that the nil radical of it is not nilpotent?
4
Primitive Recursion maps
4
Why is axiomatic system needed in propositional logic?
4
Transforming an integral
4
Why is it considered unlikely that there could be a contradiction in ZF/ZFC?
4
How it is posible that $\omega$-inconsistency does not lead to inconsistency
3
Category theory $\subset$ Set theory or vice versa?
3
Universal properties (again)
3
Why bifunctors?
3
$F$ free $\implies$ $\mathrm{Hom}_R(M,R)\otimes F\to\mathrm{Hom}_R(M,F)$ is a monomorphism?
3
a map with contractible domain must be nullhomotopic
3
How exactly do logic and mathematics interact and what happens when we change the logic?
3
What is the formal definition of a dual category?
3
Question Regarding The Power Series For $e^x$
3
An arrow is monic in the category of G-Sets if and only if its monic the category of sets
2
Awodey - A question about Remark 1.7
2
The standard approach to second-order axiom systems
2
Adjoining an element to a ring
2
Classifing groups of order 56: problems with the semidirect product
2
Summation of cardinals is smaller than product of cardinals
2
What are Free Objects?
1 2 3