List questions from examples-counterexamples

Published on 02 Jul 2014 - 15:00

218

Views

What makes "the topos $\mathbf{M}_2$" such a good counterexample?

Published on 25 Mar 2026 - 0:53

1.5k

Views

Equicontinuity of a pointwise convergent sequence of monotone functions with continuous limit

Published on 02 Jul 2014 - 18:46

2.9k

Views

Examples of differentiable functions that are not of bounded variation

Published on 26 Mar 2026 - 4:32

107

Views

A sequence of subsets of an infinite group.

Published on 04 Jul 2014 - 1:53

1.1k

Views

Non-examples for the Kato-Rellich Theorem

Published on 06 Jul 2014 - 19:15

373

Views

An example of when a product in a category may not exist.

Published on 07 Jul 2014 - 3:28

68

Views

Can any "relevant" topological spaces be decomposed into an uncountable product?

Published on 07 Jul 2014 - 7:52

1.7k

Views

Maximal ideals and maximal subspaces of normed algebras

Published on 26 Mar 2026 - 16:26

532

Views

Example of a function f that is Generalized Riemann Integrable, but its square is NOT Generalized Riemann Integrable.

Published on 25 Mar 2026 - 6:32

944

Views

Definition of the normalizer of a subgroup

Published on 08 Jul 2014 - 6:47

627

Views

Sequentially compact space

Published on 08 Jul 2014 - 9:51

436

Views

Fundamental theorem of calculus necessary assumption

Published on 09 Jul 2014 - 7:18

2.1k

Views

Conjecture: if $a+b$ and $ab$ are rational, $a$ and $b$ are rational

Published on 30 Mar 2026 - 8:03

1.8k

Views

A counter-example to Dini's Theorem (after removing a hypothesis)

Published on 10 Jul 2014 - 0:28

List Question

Some thinking about the Dini' s Theorem.

What makes "the topos $\mathbf{M}_2$" such a good counterexample?

Equicontinuity of a pointwise convergent sequence of monotone functions with continuous limit

Examples of differentiable functions that are not of bounded variation

A sequence of subsets of an infinite group.

Non-examples for the Kato-Rellich Theorem

An example of when a product in a category may not exist.

Can any "relevant" topological spaces be decomposed into an uncountable product?

Maximal ideals and maximal subspaces of normed algebras

Example of a function f that is Generalized Riemann Integrable, but its square is NOT Generalized Riemann Integrable.

Definition of the normalizer of a subgroup

Sequentially compact space

Fundamental theorem of calculus necessary assumption

Conjecture: if $a+b$ and $ab$ are rational, $a$ and $b$ are rational

A counter-example to Dini's Theorem (after removing a hypothesis)

Trending Questions

Popular # Hahtags

Popular Questions