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    • CommentRowNumber1.
    • CommentAuthorvarkor
    • CommentTimeOct 30th 2021

    Added link to website.

    diff, v11, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023
    • (edited Oct 24th 2023)

    Over on the categories mailing list, Michael Barr is worried that his institute will eventually delete the content of his personal page math.mcgill.ca/barr, where he keeps electronic copies of most of his publications.

    With a little effort, we can copy all these bibitems and their pdf-s to the “Selected writings”-section here to save them for posterity.

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023
    • (edited Oct 24th 2023)

    added pointer to:

    • Michael Barr, John Kennison, Raphael, Coequalizers and free triples, II, Theory Appl. Categories 34 (2019) 662–683 [tac:34-23]

    diff, v17, current

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    added pointer to:

    diff, v17, current

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    added pointer to:

    • Michael Barr, Topological *\ast-autonomous categories, Theory Appl. Categories, 16 (2006) 700–708 [pdf]

    • Michael Barr, Topological *\ast-autonomous categories, revisited, Tbilisi Math. J. 10 3 (2017) 51–64 [arXiv:1609.04241]

    diff, v17, current

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    added pointer to:

    diff, v17, current

    • CommentRowNumber7.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    added pointer to:

    diff, v18, current

    • CommentRowNumber8.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    added pointer to:

    diff, v18, current

    • CommentRowNumber9.
    • CommentAuthorBryceClarke
    • CommentTimeOct 24th 2023

    Re: #2

    I am happy to help with this effort. It looks like you are currently doing the 2010 - present? In that case, I can start on 1990 - 1999 papers. This way you may continue to 2000 - 2009.

    • CommentRowNumber10.
    • CommentAuthorUrs
    • CommentTimeOct 24th 2023

    Great, thanks!

    Yes, I was just going down the list here, item by item, whenever I had a free minuite.

    So far, most of the items actually have already a freely available pdf version stably hosted somewhere on the web (such as by TAC), and we can just link to these.

    In cases where the only freely available pdf is on Barr’s personal site, we should make a copy to the nLab server.

    • CommentRowNumber11.
    • CommentAuthorUrs
    • CommentTimeOct 25th 2023

    added pointer to:

    diff, v19, current

    • CommentRowNumber12.
    • CommentAuthorUrs
    • CommentTimeOct 25th 2023

    added pointer to:

    diff, v20, current

    • CommentRowNumber13.
    • CommentAuthorUrs
    • CommentTimeOct 25th 2023

    added pointer to:

    This completes the first list “2010-present” here (going anti-chronologically, top to bottom).

    diff, v20, current

    • CommentRowNumber14.
    • CommentAuthorBryceClarke
    • CommentTimeOct 25th 2023

    Added the reference:

    • Michael Barr, *\ast-Autonomous categories: once more around the track, Theory and Applications of Categories 6 1 (1999) 5-24 [tac]

    diff, v21, current

    • CommentRowNumber15.
    • CommentAuthorUrs
    • CommentTimeOct 26th 2023
    • CommentRowNumber16.
    • CommentAuthorUrs
    • CommentTimeOct 26th 2023

    added pointer to:

    • Michael Barr, The separated extensional Chu category Theory Appl. Categories 4 6 (1998) 127–137 [tac:4-06]

    diff, v22, current

    • CommentRowNumber17.
    • CommentAuthorUrs
    • CommentTimeOct 26th 2023

    added pointer to:

    • Michael Barr, Note on a theorem of Putnam’s, Theory Appl. Categories, 3 3 (1997) 45–49 [tac:3-03]

    diff, v23, current

    • CommentRowNumber18.
    • CommentAuthorUrs
    • CommentTimeOct 27th 2023

    added pointer to:

    • Michael Barr, Notes on Sketches, Technical report of the Electrotechnical Laboratory (computer language section), Tsukuba, Japan (1997) [pdf]

    diff, v24, current

    • CommentRowNumber19.
    • CommentAuthorUrs
    • CommentTimeOct 27th 2023

    added pointer to:

    diff, v24, current

    • CommentRowNumber20.
    • CommentAuthorUrs
    • CommentTimeOct 28th 2023

    added pointer to:

    diff, v25, current

    • CommentRowNumber21.
    • CommentAuthorUrs
    • CommentTimeOct 28th 2023
    • (edited Oct 28th 2023)

    added pointer to:

    diff, v25, current

    • CommentRowNumber22.
    • CommentAuthorUrs
    • CommentTimeOct 28th 2023
    • (edited Oct 28th 2023)

    added pointer to:

    diff, v26, current

    • CommentRowNumber23.
    • CommentAuthorDmitri Pavlov
    • CommentTimeOct 28th 2023

    Barr’s page is also available on Web Archive: https://web.archive.org/web/20230000000000*/https://math.mcgill.ca/barr/. So it’s not going to disappear either way.

    • CommentRowNumber24.
    • CommentAuthorUrs
    • CommentTimeOct 29th 2023

    The WaybackMachine provides file retrieval but not hosting.

    Its content is not indexed by search engines, one needs to feed it an exact url for it to respond.

    Since it’s not focused on the academic content that we care about here, the spooks have already been trying to shut it down.

    As long as it exists it’s useful for retrieving and then saving to our server documents that are not stably hosted elsewhere.

    • CommentRowNumber25.
    • CommentAuthorUrs
    • CommentTimeOct 29th 2023

    added pointer to:

    diff, v27, current

    • CommentRowNumber26.
    • CommentAuthorUrs
    • CommentTimeOct 29th 2023

    added pointer to:

    diff, v27, current

    • CommentRowNumber27.
    • CommentAuthorUrs
    • CommentTimeOct 30th 2023

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    • CommentRowNumber28.
    • CommentAuthorUrs
    • CommentTimeOct 30th 2023

    added pointer to:

    diff, v28, current

    • CommentRowNumber29.
    • CommentAuthorDavidRoberts
    • CommentTimeOct 31st 2023

    I tried telling Barr to put all his papers on the arXiv, some years ago, but he refused because they wanted the LaTeX source, and he didn’t want to give that.

    • CommentRowNumber30.
    • CommentAuthorUrs
    • CommentTimeOct 31st 2023

    added pointer to:

    diff, v29, current

    • CommentRowNumber31.
    • CommentAuthorUrs
    • CommentTimeOct 31st 2023

    added pointer to:

    diff, v29, current

    • CommentRowNumber32.
    • CommentAuthorUrs
    • CommentTimeOct 31st 2023

    added pointer to:

    diff, v29, current

    • CommentRowNumber33.
    • CommentAuthorUrs
    • CommentTimeNov 1st 2023

    added pointer to:

    • Michael Barr, Algebraic cohomology: the early days, in Galois Theory, Hopf Algebras, and Semiabelian Categories, Fields Institute Communications 43 (2004) 1–26 [doi:10.1090/fic/043, pdf]

    diff, v30, current

    • CommentRowNumber34.
    • CommentAuthorUrs
    • CommentTimeNov 2nd 2023

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    diff, v31, current

    • CommentRowNumber35.
    • CommentAuthorUrs
    • CommentTimeNov 2nd 2023

    added pointer to:

    diff, v31, current

    • CommentRowNumber36.
    • CommentAuthorUrs
    • CommentTimeNov 2nd 2023

    added pointer to:

    • Michael Barr, Terminal coalgebras for endofunctors on sets, Theoretical Comp. Sci. 114 (1993) 299–315 [pdf]

    diff, v31, current

    • CommentRowNumber37.
    • CommentAuthorUrs
    • CommentTimeNov 2nd 2023

    added pointer to:

    • Michael Barr, Toposes without points, J. Pure Appl. Algebra 5 (1974) 265-280 [pdf]

    diff, v31, current

    • CommentRowNumber38.
    • CommentAuthorUrs
    • CommentTimeNov 3rd 2023

    added pointer to:

    diff, v32, current

    • CommentRowNumber39.
    • CommentAuthorUrs
    • CommentTimeNov 3rd 2023

    added pointer to:

    • Michael Barr, Cohomology of commutative algebra I, Ph.D. Thesis, University of Pennsylvania (1962), Retyped with a few corections and notes (2003) [pdf]

    diff, v32, current

    • CommentRowNumber40.
    • CommentAuthorUrs
    • CommentTimeNov 3rd 2023

    added pointer to:

    diff, v32, current

    • CommentRowNumber41.
    • CommentAuthorUrs
    • CommentTimeNov 3rd 2023

    added pointer to:

    diff, v32, current

    • CommentRowNumber42.
    • CommentAuthorUrs
    • CommentTimeNov 4th 2023

    added pointer to:

    diff, v33, current

    • CommentRowNumber43.
    • CommentAuthorUrs
    • CommentTimeNov 4th 2023

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    diff, v33, current

    • CommentRowNumber44.
    • CommentAuthorUrs
    • CommentTimeNov 4th 2023

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    diff, v34, current

    • CommentRowNumber45.
    • CommentAuthorUrs
    • CommentTimeNov 5th 2023

    added pointer to:

    diff, v35, current

    • CommentRowNumber46.
    • CommentAuthorUrs
    • CommentTimeNov 5th 2023
    • (edited Nov 5th 2023)

    added pointer to:

    diff, v35, current

    • CommentRowNumber47.
    • CommentAuthorUrs
    • CommentTimeNov 6th 2023

    added pointer to:

    diff, v36, current

    • CommentRowNumber48.
    • CommentAuthorUrs
    • CommentTimeNov 6th 2023

    added pointer to:

    • Michael Barr, Coalgebras in a category of algebras, in: Category Theory, Homology Theory and their Applications I, Lecture Notes in Mathematics 86, Springer (1969) 1-12 [doi:10.1007/BFb0079381]

    (Barr’s website does not have a pdf copy for this one: The relevant item instead accidentally points to the pdf for “Coalgebras Over a Commutative Ring”, while the pdf-link at the item of that title is dead.)

    diff, v36, current

    • CommentRowNumber49.
    • CommentAuthorUrs
    • CommentTimeNov 7th 2023

    added pointer to:

    diff, v37, current

    • CommentRowNumber50.
    • CommentAuthorUrs
    • CommentTimeNov 7th 2023

    added pointer to:

    diff, v37, current

    • CommentRowNumber51.
    • CommentAuthorUrs
    • CommentTimeNov 7th 2023

    added pointer to:

    diff, v37, current

    • CommentRowNumber52.
    • CommentAuthorUrs
    • CommentTimeNov 7th 2023

    added pointer to:

    • Michael Barr, Models of Horn theories, in: Categories in Computer Science and Logic, Contemporary Math. 92, Amer. Math. Soc. (1989) 1–7 [pdf]

    diff, v37, current

    • CommentRowNumber53.
    • CommentAuthorUrs
    • CommentTimeNov 7th 2023

    added pointer to:

    diff, v37, current

    • CommentRowNumber54.
    • CommentAuthorDavidRoberts
    • CommentTimeNov 12th 2023

    The link to the troublesome paper is now fixed.