Question

Open and closed round balls in $\mathbb{R}^n$ are convex

score 33 · Answer 1 · 2019-05-02 20:40:29

33

Views

Open and closed round balls in $\mathbb{R}^n$ are convex

Published on 02 May 2019 - 20:40

score 1.2k · Answer 2 · 2026-03-26 01:34:47

1.2k

Views

Properly discontinuous actions and discrete groups in complete Riemannian manifolds.

Published on 26 Mar 2026 - 1:34

score 107 · Answer 3 · 2026-03-26 14:22:52

107

Views

Define a sequence $\{y_n\}$ by $y_{2n-1}=x_n$ and $y_{2n}=x$. Which of the following are true?

Published on 26 Mar 2026 - 14:22

score 86 · Answer 4 · 2026-03-25 09:53:51

86

Views

Embedding of topological spaces into polytopes: complete regularity and metrizability.

Published on 25 Mar 2026 - 9:53

score 952 · Answer 5 · 2019-05-05 16:27:45

952

Views

Method to construct an open rectangle inside an open ball

Published on 05 May 2019 - 16:27

score 141 · Answer 6 · 2026-03-25 07:45:04

141

Views

Show when $x\neq y$ then in a Metric space $d(x,y):= \epsilon > 0$

Published on 25 Mar 2026 - 7:45

score 688 · Answer 7 · 2019-05-06 10:59:02

688

Views

The metric space (0,1) is closed and bounded, but not compact?

Published on 06 May 2019 - 10:59

score 190 · Answer 8 · 2019-05-06 13:28:29

190

Views

Can one argue homeomorphism via equivalence of metrics?

Published on 06 May 2019 - 13:28

score 184 · Answer 9 · 2019-05-06 14:32:46

184

Views

Convex Combination of Contraction Maps is a Contraction Map

Published on 06 May 2019 - 14:32

score 18 · Answer 10 · 2019-05-06 14:47:11

18

Views

Existence of Continuous Function respecting points

Published on 06 May 2019 - 14:47

score 37 · Answer 11 · 2026-03-26 01:34:40

37

Views

Is $\overline{\langle2\rangle\cdot(4\Bbb Z+1)}=\langle2\rangle\cdot(4\Bbb Z_2+1)$ in $\Bbb Z_2$?

Published on 26 Mar 2026 - 1:34

score 87 · Answer 12 · 2026-03-27 16:58:37

87

Views

Intersection in the Hausdorff metric space

Published on 27 Mar 2026 - 16:58

score 273 · Answer 13 · 2019-05-07 14:18:07

273

Views

Munkres Exercise 39.6. Showing that a collection is countably locally finite but not locally finite.

Published on 07 May 2019 - 14:18

score 61 · Answer 14 · 2019-05-07 18:18:31

61

Views

Altering the axioms of a metric space

Published on 07 May 2019 - 18:18

score 34 · Answer 15 · 2019-05-07 21:53:04

34

Views

A group is a bounded subset of another group

Published on 07 May 2019 - 21:53

List Question

Open and closed round balls in $\mathbb{R}^n$ are convex

Properly discontinuous actions and discrete groups in complete Riemannian manifolds.

Define a sequence $\{y_n\}$ by $y_{2n-1}=x_n$ and $y_{2n}=x$. Which of the following are true?

Embedding of topological spaces into polytopes: complete regularity and metrizability.

Method to construct an open rectangle inside an open ball

Show when $x\neq y$ then in a Metric space $d(x,y):= \epsilon > 0$

The metric space (0,1) is closed and bounded, but not compact?

Can one argue homeomorphism via equivalence of metrics?

Convex Combination of Contraction Maps is a Contraction Map

Existence of Continuous Function respecting points

Is $\overline{\langle2\rangle\cdot(4\Bbb Z+1)}=\langle2\rangle\cdot(4\Bbb Z_2+1)$ in $\Bbb Z_2$?

Intersection in the Hausdorff metric space

Munkres Exercise 39.6. Showing that a collection is countably locally finite but not locally finite.

Altering the axioms of a metric space

A group is a bounded subset of another group

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