Saunders Mac Lane
, has died
, age 95. Winner of the National Medal of Science, Vice-President of the National Academy of Science, President of the American Mathematical Society, author of three of the canonical texts
in algebra [reg. maybe req., here's a local copy]
, Mac Lane was also mathematical ancestor to over a thousand mathematicians
, father of category theory
and homological algebra
, and expert in topology
, topos theory
, group cohomology, logic, and applied mathematics. He was one of the towering figures of postwar mathematics. Remembered by his students
and all of us who were affected by his work and his life.
posted by gleuschk
on Apr 22, 2005 -
The Geometry Center
at the University of Minnesota, while now closed, maintains an awesome website with tons of math resources.
I like sphere eversion
, i.e. turning a sphere inside out. Link is to script of video, which explains things pretty well. Here is a clip
[QT]. Also good: notes
from a class on geometry and the imagination that John Conway and some friends gave awhile back. Old but good.
posted by mai
on Mar 1, 2005 -
Hypothesis as thought-crime
...Now, however, a new brouhaha has erupted [at Harvard]and it seems impossible that Summers [the president]will emerge from this one without serious erosion of his moral authority. The trigger was a statement he made at a conference, suggesting that the reason there are more men than women in the mathematical sciences at top-flight institutions has to do with a small statistical difference in inate ability, which becomes a pretty large disparity when one looks at the 'high end' of the respective distribution curves...
The fatal words did not set forth his main theme, but merely constituted a brief aside, thoroughly hedged and qualified. Nonetheless, they touched off a firestorm of indignation, the most striking aspect of which was the intemperate response of a number of feminist scientists, who offered no counter-arguments, but simply declared the whole idea misogynistic and therefore forbidden intellectual territory.
posted by Postroad
on Jan 31, 2005 -
From MathNet to that silly song about the number nine, Square One
was one of my all-time favourite programs as a kid. It hasn't been released on video or DVD, but luckily there are plenty of fansites
with video clips, pics, and other media to take you on a trip down mathematical memory lane.
posted by sanitycheck
on Jan 18, 2005 -
The Mathematics Genealogy Project.
A service of the Department of Mathematics
at North Dakota State University
, the project intends to "compile information about ALL the mathematicians of the world. [...] It is our goal to list all individuals who have received a doctorate in mathematics." Seven generations from one of my recent professors back to Gauss
, six back to Felix Klein
(of Erlangen Program
fame), eight back to Jacobi
, and nine back to Poisson
, then Lagrange
, then Euler
, then the Bernoulli brothers
, then Leibniz
, and then it blew up at infinity.
posted by gramschmidt
on Dec 21, 2004 -
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. That's all there is to it. It doesn't sound like much, but it's as addictive as hell. The Times
is one publication with a daily puzzle (may be unavailable to overseas readers.) There a tuturial and sample puzzle here
posted by salmacis
on Dec 10, 2004 -
Mathematics and art
are thoroughly explored as two intertwined fields, in this online version of a Dartmouth course focusing on patterns [more inside].
posted by edlundart
on Oct 29, 2003 -