It’s well known that you can construct the octonions using triality. One statement of triality is that Spin ( 8) has nontrivial outer automorphisms of order 3. On the other hand, the octonions have ...

Feb 15, 2011 See a 4-dimensional proof of Heron’s formula for the area of a triangle. Classifying by Generalizing: The Theory of Accessibility Relative to a Limit Doctrine May 20, 2014 Summarizes “A ...

Monads, like burritos, come in many different varieties. In computer science monads serve to streamline computational patterns such as exception handling and context management. We illustrate these ...

Pick a type of categorical structure: say bicategories, or monoidal categories, or whatever you like. Some of the functors between structures are equivalences, in whatever the appropriate sense might ...