List questions from formal-power-series

Published on 26 Mar 2026 - 16:13

493

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Polynomial approximation to formal power series matrix

Published on 11 Jan 2018 - 13:21

14.6k

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If $R$ is a Noetherian ring then $R[[x]]$ is also Noetherian

Published on 26 Jan 2013 - 4:30

207

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Polynomial multiplication identity

Published on 14 Aug 2020 - 21:19

164

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Any triple ordinary points on an affine variety is analytically isomorphic.

Published on 15 Aug 2020 - 5:16

47

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Let $M$ be a a left module over the algebra of formal power series, $K=\mathbb{C}[[h]]$

Published on 17 Aug 2020 - 11:09

57

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Definition of power series in $m$ indeterminates over a ring $R$

Published on 20 Aug 2020 - 19:49

75

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Can we expand $(1-x)^{-1}$ for $\left| x\right| >1$

Published on 23 Aug 2020 - 18:09

261

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Proving that a ring homomorphism $R[X] \to R^R, p \mapsto \underline p$ takes $1$ to $1$

Published on 24 Aug 2020 - 16:26

421

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What is formal power series intuitively?

Published on 25 Aug 2020 - 14:47

43

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Formal powers series in $n$ indeterminates

Published on 25 Aug 2020 - 20:27

60

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Division in higher dimensional ring of formal power series

Published on 23 Feb 2026 - 2:57

209

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On an identity of formal power series (logarithm)

Published on 17 Sep 2020 - 20:03

275

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If a local morphism of rings induces an isomorphism on associated graded rings, must it have been an isomorphism

Published on 20 Sep 2020 - 4:49

30

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How to conclude that $ \bar r \equiv 0$ (mod $m$)?

Published on 23 Sep 2020 - 14:19

List Question

check Gorenstein ring

Polynomial approximation to formal power series matrix

If $R$ is a Noetherian ring then $R[[x]]$ is also Noetherian

Polynomial multiplication identity

Any triple ordinary points on an affine variety is analytically isomorphic.

Let $M$ be a a left module over the algebra of formal power series, $K=\mathbb{C}[[h]]$

Definition of power series in $m$ indeterminates over a ring $R$

Can we expand $(1-x)^{-1}$ for $\left| x\right| >1$

Proving that a ring homomorphism $R[X] \to R^R, p \mapsto \underline p$ takes $1$ to $1$

What is formal power series intuitively?

Formal powers series in $n$ indeterminates

Division in higher dimensional ring of formal power series

On an identity of formal power series (logarithm)

If a local morphism of rings induces an isomorphism on associated graded rings, must it have been an isomorphism

How to conclude that $ \bar r \equiv 0$ (mod $m$)?

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