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'A rare copy for sale of "Lisp Style and Design" by Molly Miller and Eric Benson (Digital Press, 1990), a great book cited by Paul Graham in On Lisp that covers often overlooked topics. All the proceeds will be donated to the Medley Interlisp Project.'

Lisp Style & Design - Molly Miller, Eric Benson - VERY RARE - VERY GOOD cond | eBay
Good design and style enhance programming efficiency because they make programs easier to understand, to debug, and to maintain. Lisp Hackers' Delight. Paul Graham cites this book in his classic text,On Lisp.

"Tiling with Three Polygons is Undecidable"
Erik D. Demaine; Stefan Langerman 17 Sep 2024
Abstract
We prove that the following problem is co-RE-complete and thus undecidable: given three simple polygons, is there a tiling of the plane where every tile is an isometry of one of the three polygons (either allowing or forbidding reflections)? This result improves on the best previous construction which requires five polygons.
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It remains open whether tiling …

Esimesel septembril on mitu asja, millest peaks rääkima. Esiteks muidugi see, et algab kool, meil on Pärtel Piirimäe ja Erki Tammiksaarega koos tulemas kursus "Tartu ülikool ja Euroopa ülikoolimõtte ajalugu". Materjali hulk selle kursuse jaoks on tohutu, peamine raskus seisneb selles, et välja valida, mis on vältimatult oluline. Eks näis.
Teiseks on mul tõeliselt hea meel, et Theatrum ja Lembit Peterson võtavad lavastada näidendi David Kellnerist (mille ma nende palvel kirjut…