Not signed in (Sign In)

Start a new discussion

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

Discussion Tag Cloud

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).
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeMay 14th 2013
    • (edited May 3rd 2014)

    added to Cachy real number a pointer to

    • CommentRowNumber2.
    • CommentAuthorMike Shulman
    • CommentTimeJan 8th 2018

    I added to Cauchy real number a link to Lubarsky’s paper on (the constructive lack of) Cauchy completeness of the Cauchy reals, and some discussion of his countermodels — which I’m almost certain are actually generic objects in classifying toposes, but oddly (for a paper about constructive mathematics written in 2007) he makes no mention of toposes at all.

    • CommentRowNumber3.
    • CommentAuthorTobyBartels
    • CommentTimeFeb 11th 2019

    Incorporate Wolfgang Keller's suggested edit.

    diff, v17, current

    • CommentRowNumber4.
    • CommentAuthorGuest
    • CommentTimeFeb 1st 2022
    Is there a proof somewhere that the generalised Cauchy real numbers are the same as the Dedekind real numbers? None of the sources at the bottom article speak of Cauchy nets and generalised Cauchy real numbers.
    • CommentRowNumber5.
    • CommentAuthorMike Shulman
    • CommentTimeFeb 3rd 2022

    I don’t know offhand of it being written down anywhere. Maybe Toby does? I think I learned it from him.

Add your comments
  • Please log in or leave your comment as a "guest post". If commenting as a "guest", please include your name in the message as a courtesy. Note: only certain categories allow guest posts.
  • To produce a hyperlink to an nLab entry, simply put double square brackets around its name, e.g. [[category]]. To use (La)TeX mathematics in your post, make sure Markdown+Itex is selected below and put your mathematics between dollar signs as usual. Only a subset of the usual TeX math commands are accepted: see here for a list.

  • (Help)