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Richard Zach

@richardzach.org.bsky.social

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 https://mathstodon.xyz/@rrrichardzach on the fediverse by https://fed.brid.gy/ ]

117 Followers  |  13 Following  |  23 Posts  |  Joined: 06.05.2024  |  1.6832

Latest posts by richardzach.org on Bluesky

Original post on mastodon.social

In case you missed it, Quote Posts are live on mastodon.social and mastodon.online โ€” let us know what you think!

This feature has been a long time coming because we wanted to take the time to do it right. Part of that process was sharing our work and getting feedback along the way [โ€ฆ]

30.09.2025 16:03 โ€” ๐Ÿ‘ 3    ๐Ÿ” 40    ๐Ÿ’ฌ 8    ๐Ÿ“Œ 1
A rectangular black sticker, with yellow writing, saying โ€œthe only good system is a type systemโ€ with a centred lower case lambda in a circle.

A rectangular black sticker, with yellow writing, saying โ€œthe only good system is a type systemโ€ with a centred lower case lambda in a circle.

The anarchist type theorists are in evidence along Riverside Walk in Dundee.

#typetheory #dundee

11.07.2025 12:02 โ€” ๐Ÿ‘ 1    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Picture of (from left) Jack MacIntosh, John Heintz, H.N. Gupta, Alfred Tarski, Brian Chellas, Verena Huber-Dyson, and Bob Woodrow in evening wear.

Picture of (from left) Jack MacIntosh, John Heintz, H.N. Gupta, Alfred Tarski, Brian Chellas, Verena Huber-Dyson, and Bob Woodrow in evening wear.

Here he is in 1982 at Tarski's honorary degree ceremony at the University of Calgary

30.06.2025 23:51 โ€” ๐Ÿ‘ 1    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
# Remembering Robert Woodrow Feature June 20, 2025 Issue Feature June 2025 (Vol. 2, No. 24) Issue Contents June 20, 2025 Issue : Vol. 2, No. 24 Feature Remembering Robert Woodrow CMS Meetings 2025 CMS Winter Meeting, Dec 5-8 | Save the Date! 2025 CMS Winter Meeting | Call for Education Sessions 2025 CMS Winter Meeting | Call for Scientific Sessions Announcements International Congress of Mathematicians | July 23 - 30 , 2026 โ€” ICM Call for Proposals: BIRS-MATRIX Tandem Workshop (November 22-27, 2026) Proceedings A: Mathematical theory and applications of multiple wave scattering 2025 CMS Summer Ottawa Math Camp | Registration Now Open Calls for Nominations Call for Nominations: 2026 David Borwein Award | Deadline November 15, 2025 Call from the International Prize Committee โ€” Javad Mashreghi Call for Nominations: 2026 Research Prizes | Deadline September 30, 2025 Call for Nominations: Editor-in-Chief (EIC), Crux Mathematicorum | Deadline July 15, 2025 CMS Student Committee Connect with us on Discord! โ€” Student Committee of the CMS The Canadian Mathematical Society (CMS) is deeply saddened to announce the unexpected passing of Dr. Robert Woodrow on June 10, 2025, shortly after returning to Calgary from the CMS Summer Meeting. He was deeply engaged in every facet of the academic community throughout both his career and retirement. Dr. Woodrow was involved with the CMS for over 45 years, serving in many capacities and most recently, and for over ten years, as the Chair of the Canadian Open Mathematics Challenge (COMC). He was a pillar whose dedication, insight, and kindness left an enduring and profound impact on all of us. Members of our community have shared their heartfelt memories of him: โ€œ _Robert Woodrow was a true asset to the CMS and a dedicated member since 1981. His commitment was further demonstrated through his invaluable contributions to the Board of Directors and numerous committees._ _Robert dedicated the last decade of his efforts specifically to competitions and the student committee, particularly as a pivotal chair of the COMC committee. He generously invested countless hours in this competition, through proctoring and rigorously vetting exams, leading the COMC committee, and providing exceptional leadership for our largest math competition._ _Robert will be truly missed and remembered fondly by all staff and everyone who had the privilege of working with him. We will miss his dedication and unwavering enthusiasm for math competitions. Weโ€™ll also deeply miss his presence at CMS Meetings; he was a truly dedicated champion of the CMS_.โ€ โ€“ Dr. Termeh Kousha, Executive Director, Canadian Mathematical Society โ€œ _Dr. Robert Woodrow was a very special colleague and a tremendous friend of the Canadian Mathematical Society. As a former Executive Director of the CMS, I was fortunate to work with Robert in many different ways. He was a member of the CMS for more than 45 years and he was always ready to help whenever asked. His tireless efforts, infectious personality, generosity and commitment to the work of the CMS was an inspiration to all. Of particular note was his service as Chair of the Canadian Open Mathematics Challenge Committee, the Faculty Advisor to the CMS Student Committee, a member of the CMS Advancement of Mathematics Committee and as the Olympiad Editor of Crux Mathematicorum. Robert was awarded the Societyโ€™s Distinguished Service Award in 2010 and appointed a CMS Fellow 2018. His dedication and unwavering commitment to the Society continued until only a few days before his untimely passing on June 10, 2025. The Society has lost one of its most respected and valued members and I have lost a remarkable friend. It is hard to imagine the CMS without Dr. Robert Woodrow. He will be greatly missed by all who knew him_.โ€ โ€“ Dr. Graham Wright, Former Executive Director of the Canadian Mathematical Society โ€œ _Robert was truly an extraordinary, kind and caring person, who spent his life to his last hours serving the mathematical community, in particular its younger members. His actions clearly came from his heart. I am extremely grateful to have had the honour to work with him and benefit from his wisdom and experience in administering the COMC and other competitions. He was very generous with his time and always willing to help ensuring each student was treated fairly. He clearly enjoyed what he did and it was a joy to work with him_.โ€ โ€“ Dr. Dorette Pronk (Dalhousie), Chair, Math Competitions Committee โ€œ _A gregarious host, a lively and generous table companion, a stimulating research collaborator, and a colleague with a decades-long dedication to math contests and other math enrichment activities: Robert was each of these, and in each case no-one could have asked for more._ โ€ โ€“ Dr. Bill Sands (University of Calgary) The CMS sends its heartfelt condolences to Dr. Woodrowโ€™s family and friends. His absence leaves a void that will be deeply felt across our community, and his legacy of generosity, leadership, and unwavering dedication to mathematics will continue to inspire us for many years to come. **An extended tribute to Dr. Woodrow will be featured in the September issue of the _CMS Notes_. If you have photographs or personal memories you would like to contribute, please email them to ****communications@cms.math.ca****.** **For more information, please contact:** Dr. Claude Laflamme Professor Emeritus University of Calgary laflamme@ucalgary.ca| Dr. Bill Sands Professor Emeritus University of Calgary sands@ucalgary.ca| CMS Executive Office cms@cms.math.ca ---|---|--- Share on Facebook Share on email Post this on X/Twitter Instagram Send to printer

RIP Robert Woodrow

https://mathmatters.cms.math.ca/en/article/remembering-robert-woodrow/

30.06.2025 23:46 โ€” ๐Ÿ‘ 1    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Original post on mathstodon.xyz

Preparing for Fall 2025

Most of the Open Logic textbooks have seen lots of changes from the versions currently available in hardcopy, so it's time to refresh those to Fall 2025 editions. These will incorporate all the corrections reported by readers since at least 2023 and in many cases going [โ€ฆ]

25.06.2025 21:55 โ€” ๐Ÿ‘ 4    ๐Ÿ” 5    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on mathstodon.xyz

Preparing for Fall 2025

Most of the Open Logic textbooks have seen lots of changes from the versions currently available in hardcopy, so it's time to refresh those to Fall 2025 editions. These will incorporate all the corrections reported by readers since at least 2023 and in many cases going [โ€ฆ]

25.06.2025 21:55 โ€” ๐Ÿ‘ 4    ๐Ÿ” 5    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on hcommons.social

Last week was all type theory, all the time. *This* week I get to change gears, and take part in the 50th Annual Conference of the Society for Exact Philosophy. Iโ€™m especially looking forward to Day 2, which is devoted to the work of our sorely-missed colleague, Aldo Antonelli, who passed away [โ€ฆ]

16.06.2025 13:53 โ€” ๐Ÿ‘ 1    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

@df LOC says this is a Robert W. Prevost

09.05.2025 19:53 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

@df suspect that's a different Robert Prevost. I don't think Leo was ever at Oxford and in 1985 he was in Peru

09.05.2025 19:39 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
Original post on flipboard.social

In the U.S., there's a "secret" form of media: radio reading services, where volunteers read aloud the text of newspapers, books and magazines. These used to be broadcast on "sidebands" โ€” little hidden side pockets of public radio or TV stations' airwaves โ€” for which folks needed a special radio [โ€ฆ]

28.04.2025 22:44 โ€” ๐Ÿ‘ 1    ๐Ÿ” 13    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
amen zwa, esq. (@AmenZwa@mathstodon.xyz) 4.58K Posts, 330 Following, 346 Followers ยท I am an ordinary man. So, I am unique up to isomorphism. ๐Ÿ‡บ๐Ÿ‡ธ JD โŠฅ MSCS ฮฉ BSEE ๐Ÿ‡บ๐Ÿ‡ฆ Washington, DC

@AmenZwa
Logisim port to browser "using a version of OpenJDK that runs in WebAssembly"
https://drs.software/blog/announcing-logisim/
https://logisim.app/
via
https://mathstodon.xyz/@regehr@mastodon.social/114385140845729553

23.04.2025 04:09 โ€” ๐Ÿ‘ 1    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Fuck Ayn Rand (1905โ€“1982)

#philosophy

19.04.2025 04:00 โ€” ๐Ÿ‘ 1    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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MC-PMP-Brussels-2025 About

Absolutely thrilled to be delivering this year's Philosophy of Mathematical Practices Masterclass at Vrije Universiteit Brussel, 18-20 June. Grad students and postdocs, come and talk with me about materials, institutions, and critical contexts!
https://sites.google.com/view/mc-pmp-brussels-2025

24.02.2025 14:24 โ€” ๐Ÿ‘ 2    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

@consequently "modal industrial complex"

10.04.2025 13:59 โ€” ๐Ÿ‘ 1    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on fediscience.org

Today the editorial board of _Mathematical Logic Quarterly_ (pub'd by @Wiley) resigned and launched a new #DiamondOA journal on the same topics.
https://open-access.network/services/news/artikel/ruecktritt-des-mlq-editorial-teams

See their open letter announcing their resignations and plans for [โ€ฆ]

07.04.2025 14:10 โ€” ๐Ÿ‘ 17    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 4
Preview
ZML - Zeitschrift fรผr Mathematische Logik und Grundlagen der Mathematik ZML: Zeitschrift fรผr Mathematische Logik und Grundlagen der Mathematik is an electronic Diamond Open Access research journal in mathematical logic publishing original research papers in all areas of mathematical logic.

The Mathematical Logic Quarterly is dead. Long live the Zeitschrift fรผr mathematische Logik und Grundlagen der Mathematik! https://zml.international/

07.04.2025 22:25 โ€” ๐Ÿ‘ 0    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Notations for neurodiverse learners - extensive discussion of effects of mathematical notation

https://www.sciencedirect.com/science/article/pii/S0732312325000045

29.03.2025 15:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I wrote up what I learned converting an open textbook in LaTeX to HTML and making it accessible https://richardzach.org/2025/03/accessible-open-textbooks-in-math-heavy-disciplines/ #TexLaTeX #OER #accessibility #blind

26.03.2025 19:53 โ€” ๐Ÿ‘ 3    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

@isAdisplayName I'm sure it likes watching birds, just like avid birder Curry

25.03.2025 16:28 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on flipboard.social

David Johansen, who fronted the legendary 1970s proto-punk band New York Dolls and also recorded under the pseudonym Buster Poindexter, has died at 75, his representative confirmed. Johansen was the subject of a documentary from directors Martin Scorsese and David Tedeschi, โ€œPersonality Crisis [โ€ฆ]

01.03.2025 19:58 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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papers/LISP I Programmers Manual - IBM 704 - 1960.pdf at master ยท Luiz-Monad/papers Contribute to Luiz-Monad/papers development by creating an account on GitHub.

https://imgs.xkcd.com/comics/lisp_cycles.png

OTD 1960: LISP I Programming manual is published: https://github.com/Luiz-Monad/papers/blob/master/LISP%20I%20Programmers%20Manual%20-%20IBM%20704%20-%201960.pdf

01.03.2025 17:47 โ€” ๐Ÿ‘ 0    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on hcommons.social

Next week, Iโ€™m heading off to North America for a few talks. (Iโ€™d committed to these talks before last yearโ€™s election and I have mixed feelings about the trip, but Iโ€™m going, nonetheless.)

If you're in the LA area, in or around Calgary, or New York, and youโ€™re into philosophical logic, why [โ€ฆ]

26.02.2025 20:03 โ€” ๐Ÿ‘ 0    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Original post on hcommons.social

I'm delighted to share that next month, Iโ€™ll be in Canada, giving the 2024-25 Calgary Mathematics & Philosophy Lecture. Iโ€™ll be talking about mathematical practice, proof assistants, and meaning. If youโ€™re in that part of the world on March 13, Iโ€™d love to see you there! [โ€ฆ]

16.02.2025 14:32 โ€” ๐Ÿ‘ 3    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Truly remarkable stuff in this thread.

16.02.2025 07:31 โ€” ๐Ÿ‘ 4    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Philosophy of Language, Landon D. C.Elkind This syllabus is designed for a course that introduces students to some issues in the philosophy of language. There are seven-ish units to the course: Free speech (Mill, Hornsby, Brison) Speech Acts (MacDonald, Austin, Strawson, Millikan) Implicature (Grice and Saul) Names for Fictional Characters (Thomasson and Sainsbury) Names Part 1 (Frege, Russell, Jones) Names Partโ€ฆ

Blog of the APA || Philosophy of Language, Landon D. C.Elkind

https://blog.apaonline.org/2025/02/12/philosophy-of-language-landon-d-c-elkind/

12.02.2025 19:00 โ€” ๐Ÿ‘ 0    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Abstractionism Cambridge Core - Philosophy of Science - Abstractionism

Free download

10.02.2025 14:38 โ€” ๐Ÿ‘ 13    ๐Ÿ” 9    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Original post on flipboard.social

Alexios Mantzarlis, who is the director of the Security, Trust, and Safety Initiative at Cornell Tech and part of the team that shepherded Meta's now-canceled fact-checking program, has fact-checked Mark Zuckerberg's fact-checking announcement. Here's his story for Nieman Labs. "There is so [โ€ฆ]

09.01.2025 23:40 โ€” ๐Ÿ‘ 0    ๐Ÿ” 15    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

People often ask me what I think about the philosophical gourmet report (the most well-known ranking of philosophy departments). So, I thought it might be worthwhile to put together some thoughts on it.

tldr: They are on the whole negative, but I think some positives get overlooked.

13.12.2024 16:21 โ€” ๐Ÿ‘ 81    ๐Ÿ” 20    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 7

@richardzach.org is following 12 prominent accounts