Stories by perihelions

A Tap-to-Pay Society Is Leaving New Yorkers Behind

Researcher's Smuggling Arrest Casts Light on Dispute over Chinese Students

Larry Ellison discussed axing CNN hosts with White House in takeover bid talks

New rare earth crisis is brewing as yttrium shortages spread

Ex-Bangladesh PM Sheikh Hasina sentenced to death for crimes against humanity

Wheel Running in the Wild

U.S. Congress considers ban on Chinese collaborations

Blue Origin lands New Glenn rocket booster on second try

Danish man given suspended sentence for sharing film scenes on Reddit

Typesetting the "Begriffsschrift" by Gottlob Frege in Plain TeX [pdf]

The AI Cold War

Kruskal's Tree Theorem

The seven virtues of simple type theory (2008) [pdf]

Trüth, Beaüty, and Volapük (2012)

Volapük Is a Constructed Language

Book Notes on Logic and the Philosophy of Mathematics

Special counsel indicts ex-President Yoon on charges of aiding enemy

South Korea's ex-president Yoon indicted on new charges

Beginning Mathematical Logic: A Study Guide

Deep Beneath Helsinki, the Playgrounds Are Bomb Shelters

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