Question

Number of subsets/open subsets/closed subsets of a metric space.

score 208 · Answer 1 · 2026-04-14 18:01:46

208

Views

Number of subsets/open subsets/closed subsets of a metric space.

Published on 14 Apr 2026 - 18:01

score 285 · Answer 2 · 2026-04-11 18:04:52

285

Views

Condition on Equality of closure of open ball and closed ball, suppose I have a counterexample

Published on 11 Apr 2026 - 18:04

score 93 · Answer 3 · 2026-04-13 22:28:25

93

Views

Is there a metric space of an infinite set such that every closed set is finite except the whole space.

Published on 13 Apr 2026 - 22:28

score 480 · Answer 4 · 2026-04-10 06:35:08

480

Views

Inequality proof using the triangle inequality

Published on 10 Apr 2026 - 6:35

score 63 · Answer 5 · 2026-04-15 16:59:00

63

Views

Show that for $(X,d)$ a metric space, $U= \{x \in X: d(x, C) \leq d(p, C)\}$ is a closed set

Published on 15 Apr 2026 - 16:59

score 1.8k · Answer 6 · 2026-04-14 11:43:33

1.8k

Views

Some special Metric on R

Published on 14 Apr 2026 - 11:43

score 251 · Answer 7 · 2026-04-11 09:07:55

251

Views

What is the difference between $\mathbb{N}$, $\mathbb{Z}$ and $\mathbb{Q}$ in terms of their metrics?

Published on 11 Apr 2026 - 9:07

score 264 · Answer 8 · 2026-04-11 23:59:16

264

Views

Projection from pseudometric space into metric identification preserves topologies

Published on 11 Apr 2026 - 23:59

score 109 · Answer 9 · 2026-04-15 13:58:01

109

Views

Proving no finite basis of the system of neighborhoods at $a$ in the real line exist.

Published on 15 Apr 2026 - 13:58

score 123 · Answer 10 · 2026-04-15 17:40:23

123

Views

Metric on the Set of Binary rectangular matrices

Published on 15 Apr 2026 - 17:40

score 1.2k · Answer 11 · 2026-04-15 21:12:43

1.2k

Views

Can the distance between 2 non-empty sets be infinite?

Published on 15 Apr 2026 - 21:12

score 469 · Answer 12 · 2026-04-17 19:05:27

469

Views

Equivalent Metric on Finite Set

Published on 17 Apr 2026 - 19:05

score 1.6k · Answer 13 · 2026-04-11 19:45:05

1.6k

Views

Metrizability of quotient spaces of metric spaces

Published on 11 Apr 2026 - 19:45

score 657 · Answer 14 · 2026-04-15 03:20:57

657

Views

For every real number there are exactly two isometries of the real line that leave it fixed

Published on 15 Apr 2026 - 3:20

score 128 · Answer 15 · 2026-04-13 07:32:04

128

Views

Continuity of Function Related to $F$-norms

Published on 13 Apr 2026 - 7:32

List Question

Number of subsets/open subsets/closed subsets of a metric space.

Condition on Equality of closure of open ball and closed ball, suppose I have a counterexample

Is there a metric space of an infinite set such that every closed set is finite except the whole space.

Inequality proof using the triangle inequality

Show that for $(X,d)$ a metric space, $U= \{x \in X: d(x, C) \leq d(p, C)\}$ is a closed set

Some special Metric on R

What is the difference between $\mathbb{N}$, $\mathbb{Z}$ and $\mathbb{Q}$ in terms of their metrics?

Projection from pseudometric space into metric identification preserves topologies

Proving no finite basis of the system of neighborhoods at $a$ in the real line exist.

Metric on the Set of Binary rectangular matrices

Can the distance between 2 non-empty sets be infinite?

Equivalent Metric on Finite Set

Metrizability of quotient spaces of metric spaces

For every real number there are exactly two isometries of the real line that leave it fixed

Continuity of Function Related to $F$-norms

Trending Questions

Popular # Hahtags

Popular Questions