Mathematics
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Yagger
  • Member for 6 years, 1 month
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All Questions Answers
Score Newest
question
32
Is there a fast way to prove a symmetric tridiagonal matrix is positive definite?
May 11, 2018
question
15
If $\| \alpha(s) \| \leq \| \alpha(s_0) \| = R$, then the curvature $k(s_0)$ is greater than $1/R$
Sep 19, 2018
answer
7
Proving $ \lim_{(x,y) \to (0,0)} \frac{x^2y}{x^2+|y|}=0$
Aug 24, 2019
question
5
Understanding theorem 15.12 in Kosniovski's A first course in algebraic topology
Aug 17, 2019
question
5
Homotopic maps induce the same homomorphism
Dec 13, 2018
question
4
Does a function have to be defined in a neighborhood of a point in order for a limit to exist?
Aug 9, 2018
question
4
About proofs by contrapositive and proofs by contradiction
Aug 6, 2018
question
4
$f$ is open iff $f(Int(A)) \subset Int(f(A))$
Jan 23, 2018
question
4
Regular surface and self-intersections
Apr 24, 2018
question
3
If $f:R \rightarrow R$ is an epimorphism, is $\hat f:\mathcal{M}_2 (R) \rightarrow \mathcal{M}_2 (R)$ an epimorphism?
Aug 23, 2018
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I don't know how to proceed in this situation
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Taking edits into account before upvoting a question

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