Machine learning and operations research: euro-online.org/websites/or-in… and analyticsindiamag.com/how-machine-le… and arxiv.org/pdf/1811.06128… and the vanguard company funartech.com

Finding a soulmate: xkcd.com/289/

Riemann vs Remmen: sciencedaily.com/releases/2022/…

Association of American Publishers has selected my book as a finalist of its 2022 PROSE (Professional and Scholarly Excellence) Awards in the Mathematics category: publishers.org/news/associati…

A challenge for the ambitious: xkcd.com/710/

Happy birthday, Johanna von Caemmerer! mathshistory.st-andrews.ac.uk/Biographies/Ne…

Anand Subramanian is a brilliant interviewer and overall an absolute prince. I am taking this opportunity to thank him in public.

Do not miss this brilliant film: mailchi.mp/95b8ff2361d8/s…

Recently I have learned that the photo of Paul Erdős and Willy Moser on page 24 of my book "The Discrete Mathematical Charms of Paul Erdős" has been taken by Geňa Hahn. I am sorry that I have not given him the due credit. This lapse will be rectified in subsequent printings.

"If my theory of relativity is proven successful, Germany will claim me as a German and France will declare that I am a citizen of the world. Should my theory prove untrue, France will say that I am a German and Germany will declare that I am a Jew." Albert Einstein, 1921.

Happy birthday, Cathleen! By the way, the ultimate quote in mathshistory.st-andrews.ac.uk/Biographies/Mo… is priceless.

It should be big Omega, not big Oh!! xkcd.com/342/

Bon anniversaire, cher Maître! sciencedirect.com/science/articl…

Three cheers for John Cleese! newsweek.com/john-cleese-ca… deadline.com/2021/11/john-c… bbc.com/news/uk-englan…

Happy birthday, Vera Nikolaevna! mathshistory.st-andrews.ac.uk/Biographies/Fa…

Happy birthday, Ray! en.wikipedia.org/wiki/Ray_Charl…

I have updated again the list of misprints and errors in "The discrete mathematical charms of Paul Erdős" at users.encs.concordia.ca/~chvatal/errat… . The update concerns an error on page 80.

With new contributions from Takako Kodate, Yasuko Matsui, and Toshinori Sakai, I have updated again the list of misprints and errors in "The discrete mathematical charms of Paul Erdős" at users.encs.concordia.ca/~chvatal/errat… .

Happy birthday, Coleman! en.wikipedia.org/wiki/Coleman_H…