List questions from formal-completions

Published on 11 Apr 2015 - 14:22

320

Views

Do complete Hopf algebras have an antipode?

Published on 25 Jul 2015 - 18:41

291

Views

The completion of the ring of Laurent polynomials with respect to the augmentation ideal.

Published on 24 Aug 2015 - 22:01

59

Views

If a group and a groupoid have the same profinite completions, can anything be said about them?

Published on 02 Oct 2015 - 11:49

61

Views

Motivation of completions of schemes?

Published on 23 Mar 2026 - 16:59

377

Views

Direct limit of completions of finitely generated submodules

Published on 13 Mar 2016 - 15:57

536

Views

Smooth completion of algebraic curves

Published on 18 Mar 2016 - 11:39

914

Views

completion and heights of prime ideals

Published on 19 Mar 2016 - 12:52

128

Views

K-theory of a classifying space (part two)

Published on 28 Apr 2016 - 22:46

388

Views

Commutative Algebra "mess": recover the complete local rings of the normalization

Published on 22 Mar 2026 - 10:21

215

Views

Extension of DVRs and uniformizers

Published on 24 Mar 2026 - 11:23

80

Views

How can I compute completions of rings?

Published on 30 Jun 2016 - 1:14

658

Views

$\mathfrak{a}$-adic completion of an $A$-module is a topological $\hat{A}$-module with which topology? Why does completion induce a continuous map?

Published on 28 Aug 2013 - 10:56

381

Views

Question on the formal completion of a ring $R$ w.r.t. an ideal $J$

Published on 31 Oct 2013 - 0:13

925

Views

Completing a metric space

Published on 22 Nov 2013 - 6:07

List Question

Boundedness of linear functional $\ell(g)=\int_a^b g(t)dt$

Do complete Hopf algebras have an antipode?

The completion of the ring of Laurent polynomials with respect to the augmentation ideal.

If a group and a groupoid have the same profinite completions, can anything be said about them?

Motivation of completions of schemes?

Direct limit of completions of finitely generated submodules

Smooth completion of algebraic curves

completion and heights of prime ideals

K-theory of a classifying space (part two)

Commutative Algebra "mess": recover the complete local rings of the normalization

Extension of DVRs and uniformizers

How can I compute completions of rings?

$\mathfrak{a}$-adic completion of an $A$-module is a topological $\hat{A}$-module with which topology? Why does completion induce a continuous map?

Question on the formal completion of a ring $R$ w.r.t. an ideal $J$

Completing a metric space

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