I found the Ulmer manuscript "Bialgebras in locally presentable categories" in my archives. It is a University of Wuppertal preprint, and it is rather long, say 100 pages. I am in the process of scanning it, and can, when finished, send copies on request. In the preface, Ulmer says that "The incentive to study sub-bialgebras "generated" by a subobject resulted from a problem which was given to us (= a group of students) in Heidelberg in 1964 by A. Dold." This may shed some light on the genealogy question. Anders ________________________________________ Fra: David Roberts [david.roberts@adelaide.edu.au] Sendt: 27. marts 2014 00:21 Til: Steve Lack Cc: categories list Emne: categories: Re: Ulmer preprint Perhaps the preprint could be made more widely available if found? Note that Ulmer's mathematics genealogy page is sorely incomplete! http://genealogy.math.ndsu.nodak.edu/id.php?id=65958 His Dr phil. supervisor is 'unknown', but perhaps not to readers of this list. David On 25 March 2014 11:33, Steve Lack <steve.lack@mq.edu.au> wrote:

Dear Category Theorists,

I have seen a few references to a 1977 manuscript by Fritz Ulmer, entitled “Bialgebras in locally presentable categories”. John Gray’s 1991 review of the Makkai-Pare book on accessible categories describes it as “never published”.

If anyone has a copy of this, I’d be very interested to see it.

Regards,

Steve Lack.

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