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Richard Zach

@richardzach.org
147 followers 13 following 33 posts

Logician, historian and philosopher of logic, mathematics, and computability Copied to @richardzach.org on Bluesky. Follow @ap.brid.gy so I can follow you back [bridged from mathstodon.xyz/@rrrichardzach on the fediverse by fed.brid.gy ]

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Richard Zach @richardzach.org · 13/07/2026
Parts 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]
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Richard Zach @richardzach.org · 27/05/2026
Patti Smith is a fan of Moritz Schlick
Instagram post by Patti Smith showing a plaque commemorating the place where Moritz Schlick was gunned downInstagram post by Patti Smith showing a plaque commemorating the house where Moritz Schlick lived
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Richard Zach @richardzach.org · 09/03/2026
Places of the Vienna Circle. An online exhibit by the City of Vienna library and the Institute Vienna Circle online-ausstellungen.wienbibliothek…
Portraits of members of the Vienna Circle: 
Gustav Bergmann
Rudolf Carnap
Herbert Feigl
Philipp Frank
Kurt Goedel
Hans Hahn
Olga Hahn-Neurath
Béla Juhos
Felix Kaufmann
Viktor Kraft
Karl Menger
Richard von Mises
Otto Neurath
Rose Rand
Josef Schächter
Moritz Schlick
Olga Taussky-Todd
Friedrich Waismann
Edgar Zilsel
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Richard Zach @richardzach.org · 01/07/2025
Here he is in 1982 at Tarski's honorary degree ceremony at the University of Calgary
Picture of (from left) Jack MacIntosh, John Heintz, H.N. Gupta, Alfred Tarski, Brian Chellas, Verena Huber-Dyson, and Bob Woodrow in evening wear.
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Richard Zach @richardzach.org · 19/08/2024
Hanging out here for a week with a bunch of proof theorists
Schloss Dagstuhl
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Richard Zach @richardzach.org · 16/08/2024
The display on "science in 1920s Vienna" at #wienmuseum: just the entire Vienna Circle. 10/10, no notes
Pictures of members of the Vienna Circle with the caption "science"
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Richard Zach @richardzach.org · 02/08/2024
Carnap, 30% off
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Richard Zach @richardzach.org · 18/07/2024
Constructive 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?)
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Richard Zach @richardzach.org · 10/07/2024
Rudolf Carnap Collected Works vol. 7 is out!
Cover of Rudolf Carnap Collected Works vol. 7 Studies in semantics
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Richard Zach @richardzach.org · 04/07/2024
I feel like a real logician now
Chalkboard with box of Hogomoro chalk
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