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Roots of Unity

Roots of Unity

Mathematics: learning it, doing it, celebrating it.

Wrong in Public: the 4-Color Theorem Edition

Wrong in Public is a new, hopefully very occasional, series on Roots of Unity. I don't like being wrong in public, but sometimes I make a mistake in a post, and sometimes mistakes are interesting.

March 5, 2013 — Evelyn Lamb

Having Fun with the 4-Color Theorem

A four-coloring of most of Europe. The 4-color theorem is fairly famous in mathematics for a couple of reasons. First, it is easy to understand: any reasonable map on a plane or a sphere (in other words, any map of our world) can be colored in with four distinct colors, so that no two neighboring countries share a color.Second, computers were instrumental in the proof of the four-color theorem.

March 1, 2013 — Evelyn Lamb

Two Evelyns and a Katie: a Snapshot from AAAS

Evelyns from Texas at the AJAS poster session. (Left: yours truly. Right: Evelyn Ho.) When I was at the American Association for the Advancement of Science meeting in Boston last week, I popped by the American Junior Academy of Science poster session featuring the work of high school scientists.

February 22, 2013 — Evelyn Lamb

Joint Math Meetings Wrap-Up

I wrote a few blog posts while I was at the Joint Mathematics Meetings back in January, but now you can read some more comprehensive coverage of the meetings at the American Mathematical Society website.

February 16, 2013 — Evelyn Lamb

What Are Roots of Unity?

This blog is called "Roots of Unity" because in 2004 I thought it would be an awesome band name. Not the cover of my band's first album. Image courtesy of Gregory A.

February 7, 2013 — Evelyn Lamb

Try Your Hand at Hands-on Math

On Sunday, I wrote about my public statistics session at ScienceOnline. Today, I'll tell you a little about my other session, Hands-on Math, co-moderated by Matthew Francis.

January 29, 2013 — Evelyn Lamb

Setting Mathematics in Verse

  Swirling Symmetry, mathematically-inspired art by Sandra DeLozier Coleman, who also writes mathematical poetry. This piece appeared in the 2013 Joint Mathematics Meetings art gallery.

January 15, 2013 — Evelyn Lamb

Knotty Fun at the Joint Math Meetings

Mathematicians attempting to untangle a human knot at a knot "flash mob" on January 11, 2013 at the Joint Mathematics Meetings. Image: American Mathematical Society Anyone with necklaces or lace-up shoes has some first-hand experience with knots, but believe it or not (knot?), there is an entire mathematical discipline dedicated to studying knots and some closely related concepts.

January 12, 2013 — Evelyn Lamb

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