Mathematics
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Category_Theorist
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All Questions Answers
Score Newest
answer
10
Formal Definition of Cardinality
May 13
answer
5
Intuition behind large diagrams in category theory
Jun 4
answer
5
$ S = \left\lbrace\frac{m\sqrt{n}}{p} - 2\pi n^{3/2}p\,, \;n \in \mathbb{N}\,, m \in \mathbb{Z}\right\rbrace$ is an enumerable set.
May 25
answer
5
Expressing $(a \ast b)^{-1}$ in terms of $a^{-1}$ and $b^{-1}$ where $a,b \in G$, $G$ is a group under operation "$\ast$".
May 11
answer
5
Dualising the Yoneda lemma.
May 11
answer
4
Map that factors through a quotient but is not a homorphism
May 25
answer
4
If the presheaf Hom$_\mathcal{C}(- \times A, B) : \mathcal{C}^\text{op} \to \textbf{Set}$ is representable, then $\mathcal{C}$ is ccc
May 22
answer
4
pushout in the category of topological space is closed under product with compact set
May 18
answer
4
Free module and exact sequences
May 5
answer
4
Are there non cyclic subgroup of the set of nonzero rationals under multiplication?
May 6

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