Richard Zach @richardzach.org · 13/07/2026Parts of the Open Logic Text as well as the textbooks Sets, Logic, Computation and Set Theory are now available in (Brazilian) Portuguese. The Portuguese translation and adaptation is by Pedro Lima, a philosophy student based in Portugal. He plans to continue […] [Original post on mathstodon.xyz] 012
Richard Zach @richardzach.org · 09/03/2026Places of the Vienna Circle. An online exhibit by the City of Vienna library and the Institute Vienna Circle online-ausstellungen.wienbibliothek… 012
Richard Zach @richardzach.org · 01/07/2025Here he is in 1982 at Tarski's honorary degree ceremony at the University of Calgary 021
Richard Zach @richardzach.org · 19/08/2024Hanging out here for a week with a bunch of proof theorists 022
Richard Zach @richardzach.org · 16/08/2024The display on "science in 1920s Vienna" at #wienmuseum: just the entire Vienna Circle. 10/10, no notes 012
Richard Zach @richardzach.org · 18/07/2024Constructive mathematicians (esp. intuitionists): Why does Brouwer say in www.jstor.org/stable/20488578 on p. 115 that \\(\lnot\lnot s_f \to s_f\\)? (Like is this so obvious it needs no explanation and I'm just dense?) 101