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David Richeson
Works at Math Horizons (MAA)
Attended Hamilton College
Lives in Carlisle, PA
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David Richeson

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Memorial Day at the Richeson household: Using Newton's law of heating/cooling to figure out when the ham will be done in the smoker.
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This alone is reason enough to follow you.
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Clever Hans is rolling in his grave.
 
Clearly an icosahedron. Maybe horses can't count that high?
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Nice section on collaboration in math: Polymath, MathOverflow, blogs, etc.
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Hyperbolic Tilings of Images

I have remade an old program for making hyperbolic tilings to a Javascript version. An image is cropped to a hyperbolic polygon in the center of the disc. That polygon is then reflected repeatedly to fill out the tiling. 

When an image of a face is reflected it gets distorted (from an Euclidean point of view). Depending on the tiling, the distortions range from “slightly strange” to grotesque. The tiling of Poincaré is “slightly strange” (I hope) while the hyperbolic self-portrait is creepy (at least according to my kids).

Make Hyperbolic Tilings of Images: http://www.malinc.se/m/ImageTiling.php
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Just arrived in the mail: my book (Euler's Gem) in Japanese! Note: it is split into two volumes and it opens "backwards."
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Great. Enjoy. In English there's only one book http://press.princeton.edu/titles/8722.html. They chose to publish the Japanese translation in two volumes.
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Our college (Dickinson College) was very fortunate to be able to award +Timothy Gowers the Joseph Priestley Award last week. Tim Gowers spent two days at the college interacting with our students, faculty, and staff. It was a wonderful experience for us. His public lecture "Can Computers be Mathematicians?" is now available online at the link below. If you want to skip to the talk, here's the timeline:

0:00—Opening remarks by Dean and Provost Weissman
5:45—My introductory remarks
11:00—President Roseman presents the award
12:20—Tim Gowers's lecture "Can Computers be Mathematicians?"
1:08:30—Q&A
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Many thanks.
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Have him in circles
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David Richeson

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Ian McEwan gave a great defense of free speech in his commencement address at Dickinson College (the college where I teach). I just listened to it again.
Ian McEwan gave this commencement speech at Dickinson College
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New project with +Keenan Crane: A topologist can't tell the difference between a coffee mug and a doughnut/donut.
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Yesterday +Timothy Gowers wrote about a fashion model who was also a math lecturer (actually an engineering PhD student) https://plus.google.com/u/0/+TimothyGowers0/posts/4YH9Wtrauh6. So I thought I'd dig out some photos from my brief modeling career some time around 1980. These photos appeared in a trade catalog for a t-shirt company. I must not have had "what it takes" because I think my career ended after two photo shoots.
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This is "mathcrastination"—I have real work to do, but instead I'm procrastinating by playing around with silly math. Yesterday I posted some unusual looking nth roots that I found: https://plus.google.com/+DavidRicheson/posts/cQJhJnPsh1A Then a friend sent me this one √(91125)=9√(1125). Very cool! So I've spent the last hour looking for some other similar equalities. Here are a few. I'm sure there are more, but I have to get back to my real work . . .
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It looks fantastic!
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Riffing on the example in +Richard Green's post https://plus.google.com/101584889282878921052/posts/3BjYRf8Eg8f. Make your own examples using (x+(x/(x^n-1))^(1/n)= x(x/(x^n-1))^(1/n).
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Good point! I see this as yet another example of how mixed fractions can be a source of confusion. Down with mixed fractions! :-)
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Two random facts I learned this morning.

1. The first official logo for Wikipedia was a ball wrapped with a quote from Euclid and his Modern Rivals by Charles Dodgson (AKA Lewis Carroll).

2. Circadian (as in circadian rhythms) comes from the Latin circa+dies ("about a day"). Makes sense!
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Have him in circles
943 people
Anzani Zahrani's profile photo
angel baby's profile photo
Lisa Siems's profile photo
mit mat's profile photo
Bryan Anderson's profile photo
Tim Utzig's profile photo
Hamza Qais's profile photo
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Work
Occupation
Associate Professor of Mathematics
Employment
  • Math Horizons (MAA)
    Editor-elect, 2012 - present
  • Dickinson College
    Associate Professor of Mathematics, 2006 - present
  • Dickinson College
    Assistant Professor of Mathematics, 2000 - 2006
  • Michigan State University
    Visiting Research Instructor, 1998 - 2000
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Carlisle, PA
Story
Tagline
Mathematician
Introduction
Mathematics professor at Dickinson College, author of Euler's Gem, and editor-elect for Math Horizons
Education
  • Hamilton College
    Mathematics, 1989 - 1993
  • Northwestern University
    Mathematics, 1993 - 1998
  • Sea Education Association
    1992 - 1992
Basic Information
Gender
Male