List questions from borel-sets

Published on 06 Jul 2020 - 11:36

71

Views

Universal sets for self dual pointclasses?

Published on 26 Mar 2026 - 12:42

65

Views

A fallacious proof of the existece of non-Borel sets.

Published on 27 Mar 2026 - 4:20

79

Views

Proof that the fraction "round down" function is measurable.

Published on 20 Jul 2020 - 22:44

74

Views

I need help with Dudley problem 4.2.6

Published on 24 Jul 2020 - 7:36

170

Views

Prove that the set $A=\{x\in\mathbb{R}:f' \text{ exists}\}$ is Borel whenever $f$ is continuous

Published on 26 Jul 2020 - 16:02

64

Views

Is $X$ a Borel subset of $\beta X$?

Published on 25 Mar 2026 - 15:51

257

Views

how are $m^{}(E)$ and $m^{}(E)$ related to $m^{}(E)$?

Published on 01 Feb 2017 - 7:12

66

Views

On the relationship between Borel sigma algebra generated by a space and its "soberified" space

Published on 17 Feb 2017 - 8:58

635

Views

Confusion about Lebesgue Measurable Functions

Published on 03 Mar 2017 - 0:45

851

Views

Continuous function and indicator function on a Borel set

Published on 08 Mar 2017 - 5:17

66

Views

Borel rank of the set of transitive well–founded relations

Published on 26 Mar 2026 - 17:46

950

Views

Is there a set $A \subset [0,1]$ such that both $A$ and $[0,1] \setminus A$ intersect every positive-measure set?

Published on 26 Mar 2026 - 17:46

455

Views

Image of a Borel set is a borel set?

Published on 13 Mar 2017 - 8:13

484

Views

Borel $\sigma$-algebra of subset of a topological space

Published on 19 Mar 2017 - 16:30

List Question

Prove that a set is Borel(and hence Lebesgue)

Universal sets for self dual pointclasses?

A fallacious proof of the existece of non-Borel sets.

Proof that the fraction "round down" function is measurable.

I need help with Dudley problem 4.2.6

Prove that the set $A=\{x\in\mathbb{R}:f' \text{ exists}\}$ is Borel whenever $f$ is continuous

Is $X$ a Borel subset of $\beta X$?

how are $m^{}(E)$ and $m^{}(E)$ related to $m^{}(E)$?

On the relationship between Borel sigma algebra generated by a space and its "soberified" space

Confusion about Lebesgue Measurable Functions

Continuous function and indicator function on a Borel set

Borel rank of the set of transitive well–founded relations

Is there a set $A \subset [0,1]$ such that both $A$ and $[0,1] \setminus A$ intersect every positive-measure set?

Image of a Borel set is a borel set?

Borel $\sigma$-algebra of subset of a topological space

Trending Questions

Popular # Hahtags

Popular Questions