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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeMay 19th 2019
    • (edited May 19th 2019)

    brief category:people-entry for hyperlinking references at orbifold and hyperbolic manifold, in particular to this excellent book:

    v1, current

    • CommentRowNumber2.
    • CommentAuthorTim_Porter
    • CommentTimeMay 19th 2019
    • (edited May 19th 2019)

    The link to Vanderbilt uni goes nowhere as the apparent links on that further page lead to messages saying it has been archived or suspended.

    I was wondering if this John Ratcliffe was the same at the author of Ratcliffe’s lemma from Combinatorial Group Theory. It looks likely as his thesis was on: The Theory of Crossed Modules with Applications to Cohomology of Groups and Combinatorial Homotopy theory

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeMay 19th 2019

    The link in the entry

    https://as.vanderbilt.edu/math/bio/?who=john-ratcliffe

    works fine for me.

    • CommentRowNumber4.
    • CommentAuthorTim_Porter
    • CommentTimeMay 19th 2019

    When you follow that link the page has a link:

    Click here for a complete list of Research Articles, Books and Book Reviews.

    That leads nowhere. There seems nothing one can do as I tried other routes to see if I could get to the corresponding page. It gives:

    This site has been archived or suspended.

    I also tried https://my.vanderbilt.edu/johnratcliffe/ with the same effect.

    It is not important but I thought I would mention it in case someone could find how to display his publication list, which might be useful.

    • CommentRowNumber5.
    • CommentAuthorDavidRoberts
    • CommentTimeMay 19th 2019
    • (edited May 19th 2019)

    @Tim

    It’s the same guy. MathSciNet lists only one John Ratcliffe (papers, subscription needed), and the thesis is as you claim, up to his most recent paper in 2017, A Bieberbach theorem for crystallographic group extensions.

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