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Hyperbolic Quotes about Hyperbolic Geometry

Hyperbolic Quotes about Hyperbolic Geometry

“The treatise itself, therefore, contains only twenty-four pagesthe most extraordinary two dozen pages in the whole history of thought!” “How different with BolyaiJnos and Lobachvski, who claimed at once, unflinchingly, that their discovery marked an epoch in human thought so momentous as to be unsurpassed by anything recorded in the history of philosophy or of [...]

February 12, 2014 — Evelyn Lamb

The Math Wars, Lewis Carroll Style

In 1879, Charles Dodgson, better known as Lewis Carroll, published an odd little book called Euclid and his Modern Rivals (available for free at the Internet Archive).

March 4, 2014 — Evelyn Lamb

Counterexamples in Origami

Surfaces are complicated. Triangles are simple. That’s an idea behind some methods of creating computer graphics and some advanced mathematics.

November 30, 2013 — Evelyn Lamb
A Mathematical Thanksgiving Celebration

A Mathematical Thanksgiving Celebration

Last year, the inimitable Vi Hart made a Thanksgiving video series, describing how to imbue your holiday celebration with more mathematics.

November 27, 2013 — Evelyn Lamb
Chasing the Parallel Postulate

Chasing the Parallel Postulate

Euclidean geometry, codified around 300 BCE by Euclid of Alexandria in one of the most influential textbooks in history, is based on 23 definitions, 5 postulates, and 5 axioms, or “common notions.” But as I mentioned in my recent post on hyperbolic geometry, one of the postulates, the parallel postulate, is not like the others.

February 28, 2014 — Evelyn Lamb