Hsin-Hao Yu's Personal Blog

In Tlön, Uqbar, Orbis Tertius, Borges discovered an important clue to toe secrets of Tlön when he found a letter hidden in a book: In March of 1941, a handwritten letter from Gunnar Erfjord was discovered in a book by Hinton that had belonged to Herbert Ashe. Gunnar Erfjord and Herber Ashe are both fictional characters who are members of the Orbis Tertius secret society, but who is Hinton? Hinton is mentioned only once in the entire story, so he must be a historical figure. But which Hiton is so famous that he could be referred to just by the last name?

Richard Feynman’s Integral Trick: I remember that in Surely You Are Joking, Mr. Feynman, Feynman talked about an obscure trick for doing integrals. What was he talking about? This article explains it.

An Infinite Universe of Number Systems - The p-adics seem to be a fanciful formalism of numbers. What’s interesting about it is that it provides a way to study an entire university of number systems.

A parody of Jorge Luis Borges’s essay “A New Refutation of Time”: “The Third Refutation of Ordinality”. Or maybe “10 Arguments Against Cardinality”.