 
Despite competition from the many activities taking place at the same time (see *Tangente's 35th anniversary: an unforgettable day), a large audience gathered to discover and meet the winners of the 2022 Tangente Awards. Following an introduction by Bertrand Cousin, head of exhibitions and cultural events at the museum, Bertrand Hauchecorne, president of the Club Tangente, and Gilles Cohen, publishing director of Tangente*, presented the three prizes awarded that year. One was missing: the prize for the best article, which the jury did not award in 2022. In its place came a new trophy, the Affaire de Logique Prize.
The Tangente Book Prize goes to Dingue de maths
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As usual, the Tangente Book Prize was the first award to be announced. The ceremony's hosts recalled that, ever since its creation 35 years ago, Tangente has championed "the marriage of mathematics and culture"—naturally including literature. No fewer than 560 book reviews are available on **tangente-mag.com**! That is no small feat...
The Tangente Book Prize, awarded since 2009, unfolds in several stages. The Tangente team draws up a shortlist from recently published books that have been reviewed. An online vote then determines the "nominees"—usually five, but six this year because the fifth- and sixth-placed books received almost the same number of votes. An independent jury, partly renewed each year and notably including the previous year's winning author, then deliberates and makes its choice.
The six books nominated this year were displayed on a table in the lecture hall. Which one had won? The suspense mounted...
Bertrand Hauchecorne announces the title: Dingue de maths, by Quentin Lazzarotto and Avner Bar-Hen, published by EPA. He then invites Quentin up—his co-author is attending a conference in Houston, in the United States—along with his editor, Laurence Lehoux, and talks with them. Gilles Cohen explains that, in addition to the trophy presented to the authors—a work of mathematical art by Denise Demaret-Pranville, made in duplicate, one for each author—the publisher receives an advertisement on the outside back cover of Tangente.
Quentin Lazzarotto receiving the trophy, Familistère, a beautiful work of art by Denise Demaret-Pranville (on the left in the photograph).
Nathalie Juste, a librarian and jury member, then announces the special commendation, awarded to André Deledicq and Michaël Launay for their Dictionnaire amoureux des mathématiques, published by PLON. Michaël, who had already won the Tangente Book Prize in 2017, was unable to attend.
André Deledicq, who played a very active part in this Tangente event—he had already given a talk and taken part in the book signing—recounts the story behind the book before receiving the commendation, an artistic certificate signed by Sellig Zed.
André Deledicq receiving his commendation from the artist Sellig Zed.
The Tangente High School Students' Prize goes to Madame Einstein
Martine Brilleaud, editor-in-chief of Tangente, then outlines the stages of the Tangente High School Students' Prize (PTL). High schools throughout France sign up—42 in 2022 and 60 for 2023. The magazine's editorial team selects ten books, which are ordered by the schools' documentation centers (CDIs), except at the first ten newly enrolled schools, to which the publishers send them free of charge. At each school, ten or more students read at least six of the books and rank them; the combined rankings determine the final results.
Since the reading took place during the 2021–2022 school year, the result was not really a surprise. The winning book was Madame Einstein (2019), by Marie Benedict, who lives in the United States and was unable to attend. Her editor at Presses de la Cité, Frédérique Polet, accepted the trophy on her behalf,
The winning book's editor poses with Patrice Jeener's trophy.
The two special commendations were then announced. The first went to Sylvie Dodeller for her book Sophie Germain, la femme cachée des mathématiques, published by L’École des Loisirs (2020). The author and her editor, Véronique Haïtse, were there to receive the certificate by Sellig Zed.
The second special commendation went to Cyril Bonin for the graphic novel Comme par hasard, published by Éditions Glénat (2021).
Sylvie Dodeller and Cyril Bonin displaying their certificates.
The Affaire de Logique Prize goes to Jean-Michel Le Claire
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Affaire de Logique is the name of the weekly column in Le Monde for which Élisabeth Busser and Gilles Cohen, recently joined by Jean-Louis Legrand, have devised a new mathematical puzzle every week for more than 25 years. To mark the publication of issue 200 of Tangente, a problem-creation competition was launched. It proved a success, judging by the number and quality of the puzzles submitted. It was therefore decided to make the competition a permanent fixture of the Tangente Awards, in partnership with the problem-solving website Diophante.fr, whose organizer, Philippe Fondanaiche, served on the jury. Michel Criton, editor of the problem sections in Tangente and president of the FFJM, another competition partner, presented the jury's criteria: originality; an elegantly framed statement; and an ingenious solution.
He then announced the results, calling up the winner, Jean-Michel Le Claire, for his puzzle "La crypte aux monnaies". After Philippe Fondanaiche had spoken, Le Claire was presented with the trophy, a work of vector art by Scowcza.
The presentation of the Affaire de Logique Prize.
From left to right: the two artists and the winner.
Jean-Louis Legrand, also a member of the jury, then announced the two special commendations, awarded to Élie Stines for "Gentil!" and Augustin Genoud for "La cueillette des pommes". Genoud, who was unable to travel from Switzerland, where he lives, was represented by Mireille Schumacher, who had made the journey from Yverdon to attend the Tangente day.
Before thanking everyone who had helped make these awards possible, Gilles Cohen reminded the audience that the winning Affaire de Logique problems could be found on the problem page of this issue of Tangente.
