Mariano Suárez-Alvarez
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# 77,703 Reputation

65 today
 +35 9 hours ago 3 events Is the diagonal map $\mathbb{C} \to \prod_{i=1}^\infty \mathbb{C}$ an etale map of rings? +10 37 mins ago upvote Natural description of fibers of blowup of projective space along a subspace +10 3 hours ago upvote What is the relationship between chain homotopy and the Leibniz rule? +10 11 hours ago upvote Occurrences of trivial representation is equal to dimension of $\{v\in V:\varphi(g)v=v\}$.
60 yesterday
 +10 23:49 upvote Conformal map from the punctured unit disc onto the unit disc? +10 23:17 upvote Why is $\omega$ the smallest $\infty$? +10 21:04 upvote How can I prove that the additive group of rationals is not isomorphic to a direct product of two nontrivial groups? +10 19:35 upvote A ring element with a left inverse but no right inverse? +10 19:32 upvote Tangent space in a point and First Ext group +10 04:21 upvote Prove that $\text{rank}(A^{3}) < \text{rank}(A^{2}) < \text{rank}(A)$ if $A$ is a $(10 \times 10)$-matrix with nilpotence equal to $3$. +15 / -15 21:23 2 events If $H$ is a cyclic group of even order, $H$ has exactly two elements which square to $1.$
158 2 days ago
 +45 21:29 4 events What does it mean for a field to be of order n? +35 02:49 3 events Showing $\zeta_5 \notin \mathbb{Q}(\zeta_7)$ +35 01:49 3 events If $H$ is a cyclic group of even order, $H$ has exactly two elements which square to $1.$ +25 19:34 2 events Irreducible polynomial is always separable in char 0 field +10 03:33 upvote Are all mathematicians human calculators? +10 02:50 upvote How can adding an infinite number of rationals yield an irrational number? -2 01:53 downvote If $H$ is a cyclic group of even order, $H$ has exactly two elements which square to $1.$
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