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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:

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The link to Vanderbilt uni goes nowhere as the apparent links on that further page lead to messages saying it has been archived or suspended.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

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

works fine for me.

• CommentRowNumber4.
• CommentAuthorTim_Porter
• CommentTimeMay 19th 2019

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This site has been archived or suspended.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.