Not signed in (Sign In)

Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

  • Sign in using OpenID

Site Tag Cloud

2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology definitions deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nforum nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to nForum
If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).
  1. https://math.stackexchange.com/questions/4878507/is-a-sigma-locally-finite-collection-of-open-sets-locally-countable

    Steven Clontz

    diff, v4, current

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeMar 12th 2024

    If I understand well, Steven Clontz has fixed the proof in this entry (dating from revision 1 in 2019), following discussion at MO:q/4878507.

    I have added the MO-pointer to the References (here).

    diff, v5, current

    • CommentRowNumber4.
    • CommentAuthorPatrick Rabau
    • CommentTimeMar 13th 2024

    FYI, the current reference in the References section is a slight misattribution.
    https://math.stackexchange.com/questions/4878507 corrects the proof from revision 1 (2019), but the correction was provided in the question itself (“My thoughts” section), not in the reply. The reply was answering a related but different question, namely to give an example of σ\sigma-locally finite base that is not locally finite. That is not directly relevant to the fix here.

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeMar 14th 2024
    • (edited Mar 14th 2024)

    I have changed the link from the MO-comment to its ambient question.

    But please do edit yourself the way you see fit. It’s hard to tell what’s going on. For instance whether you are “Ricky” and want to be credited as such.

    diff, v7, current

    • CommentRowNumber6.
    • CommentAuthorPatrick Rabau
    • CommentTimeMar 14th 2024

    Thanks, will edit myself the next time. And no, I’m not Ricky.