Question

Is a formal power series a fraction of polynomials?

score 143 · Answer 1 · 2026-03-26 21:25:43

143

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Is a formal power series a fraction of polynomials?

Published on 26 Mar 2026 - 21:25

score 30 · Answer 2 · 2023-09-14 10:25:23

30

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Is the converse of the sequence lemma false in general？

Published on 14 Sep 2023 - 10:25

score 119 · Answer 3 · 2023-09-15 17:04:35

119

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Are all fields the field of fractions of an integral domain that is not a field?

Published on 15 Sep 2023 - 17:04

score 69 · Answer 4 · 2023-09-17 02:44:09

69

Views

For a non-decreasing function $F$ why should we have the equality $\int_{a}^b f(x)dx\leq F(b)-F(a)$.

Published on 17 Sep 2023 - 2:44

score 103 · Answer 5 · 2026-03-25 06:03:52

103

Views

Frattini subgroup of a quotient

Published on 25 Mar 2026 - 6:03

score 77 · Answer 6 · 2023-09-18 15:31:52

77

Views

Minimal conditions on a Radon Measure that make into a Riesz Measure

Published on 18 Sep 2023 - 15:31

score 42 · Answer 7 · 2026-03-25 07:48:25

42

Views

Counterexample to $\hat{\mathfrak{a}}\hat{M}=\widehat{\mathfrak{a}M}$ when the base ring is not Noetherian or the module $M$ is not finitely-generated

Published on 25 Mar 2026 - 7:48

score 268 · Answer 8 · 2026-03-26 16:03:55

268

Views

Left-adjoint to Yoneda embedding

Published on 26 Mar 2026 - 16:03

score 207 · Answer 9 · 2026-03-26 13:00:45

207

Views

A conjecture for the golden ration via continued fraction $\phi=\frac{1+\sqrt{5}}{2}$

Published on 26 Mar 2026 - 13:00

score 173 · Answer 10 · 2026-02-23 05:42:36

173

Views

Do large sets have this specific type of self-similarity?

Published on 23 Feb 2026 - 5:42

score 28 · Answer 11 · 2026-04-04 21:32:25

28

Views

If two characters agree on almost all primes then are they induced by same primitive characters?

Published on 04 Apr 2026 - 21:32

score 108 · Answer 12 · 2026-03-25 20:22:57

108

Views

Is the ring of formal power series a localization of some non local ring at prime ideals?

Published on 25 Mar 2026 - 20:22

score 53 · Answer 13 · 2026-03-29 06:04:38

53

Views

Find an example where there is a variable that affects the result, unlike expected

Published on 29 Mar 2026 - 6:04

score 141 · Answer 14 · 2023-09-25 14:49:31

141

Views

Set consisting of fixed power of elements of a group

Published on 25 Sep 2023 - 14:49

score 110 · Answer 15 · 2023-09-26 14:37:38

110

Views

Show that For all real numbers $a, b$: If $0 < a < b$, then $\frac{a+b}{3} \in [a, b]$ is false by providing counter example.

Published on 26 Sep 2023 - 14:37

List Question

Is a formal power series a fraction of polynomials?

Is the converse of the sequence lemma false in general？

Are all fields the field of fractions of an integral domain that is not a field?

For a non-decreasing function $F$ why should we have the equality $\int_{a}^b f(x)dx\leq F(b)-F(a)$.

Frattini subgroup of a quotient

Minimal conditions on a Radon Measure that make into a Riesz Measure

Counterexample to $\hat{\mathfrak{a}}\hat{M}=\widehat{\mathfrak{a}M}$ when the base ring is not Noetherian or the module $M$ is not finitely-generated

Left-adjoint to Yoneda embedding

A conjecture for the golden ration via continued fraction $\phi=\frac{1+\sqrt{5}}{2}$

Do large sets have this specific type of self-similarity?

If two characters agree on almost all primes then are they induced by same primitive characters?

Is the ring of formal power series a localization of some non local ring at prime ideals?

Find an example where there is a variable that affects the result, unlike expected

Set consisting of fixed power of elements of a group

Show that For all real numbers $a, b$: If $0 < a < b$, then $\frac{a+b}{3} \in [a, b]$ is false by providing counter example.

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