Mathematics
Geoffrey Sangston's user avatar
Geoffrey Sangston's user avatar
Geoffrey Sangston's user avatar
Geoffrey Sangston
  • Member for 6 years, 6 months
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All Questions Answers
Score Newest
question
14
Is a function $\mathbb{R}^n \to \mathbb{R}$ which has a closed and connected graph necessarily continuous?
Sep 29
question
10
Can a hyperbolic disk isometrically embed into $\mathbb{R}^3$, with a circle for its boundary?
May 15, 2021
question
9
If all circles have constant geodesic curvature, does the surface have constant curvature?
Jun 19, 2021
question
6
Is $x \mapsto d(x, A)$ a quotient map?
Apr 30, 2019
question
6
$f(z)$ is holomorphic on $|z| < 1$, with $|f(z)| ≤ 3$ and $f(\frac{1}{2}) = 2$. Show that $f(z) \neq 0$ when $|z| < \frac{1}{8}.$
Aug 6, 2021
question
5
Lawvere's Sets For Mathematics Exercise 2.29c
May 10, 2017
answer
5
If all circles have constant geodesic curvature, does the surface have constant curvature?
Jun 19, 2021
answer
4
$f(z)$ is holomorphic on $|z| < 1$, with $|f(z)| ≤ 3$ and $f(\frac{1}{2}) = 2$. Show that $f(z) \neq 0$ when $|z| < \frac{1}{8}.$
Aug 6, 2021
question
3
Split epi and split mono without iso
May 11, 2017
question
3
Natural conditions implying the union of closed sets is closed
May 25, 2017

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