## Dave Bayer
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[![Dave Bayer](index/img/DaveBayer.jpg)](index/img/Roast.jpg)
### Professor of Mathematics, Barnard College
[Department of Mathematics](http://www.math.columbia.edu)
[Barnard College](http://www.barnard.columbia.edu)
[Columbia University](http://www.columbia.edu)
2990 Broadway MC 4418
New York, NY 10027-6940
[426 Mathematics](https://www.math.columbia.edu/~bayer/OfficeHours/images/Mathematics426.pdf)
(+1) 212 854 2643
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### Email
[dbayer@barnard.edu](mailto:dbayer@barnard.edu)
I use [Sanebox](https://www.sanebox.com/) to prioritize the many
email messages that I receive each week. If you write me from an academic address
such as Barnard or Columbia, then I will see your message right away. If you
write me from an unfamiliar personal email address, then there is a risk
that I won't see your message.
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### Teaching
[Teaching 1997-2019](teaching.html)
I am on sabbatical leave until September 2020.
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[Vita](papers)
[Macaulay](Macaulay)
[Prize](http://www.math.columbia.edu/~bayer/PrizeExam)
[Bside](Bside)
[Bryce](BryceBayer/Bryce-Bayer-NYTimes-30Nov12.jpg)
[source](index/source.html)
[validate](http://redbot.org/?uri=http%3A%2F%2Fwww.math.columbia.edu%2F~bayer%2F)