{"product_id":"9780486497051","title":"The Godelian Puzzle Book : Puzzles, Paradoxes and Proofs by Raymond M. Smullyan","description":"These recreational logic puzzles provide entertaining variations on G?del's incompleteness theorems, offering ingenious challenges related to infinity, truth and provability, undecidability, and other concepts. Written by a distinguished mathematician and creator of numerous popular puzzle books, this volume requires no background in formal logic and will delight readers of all ages.\u003cbr\u003eBinding: Paperback \/ softback","brand":"Gardners","offers":[{"title":"Default Title","offer_id":56290972565877,"sku":"9780486497051","price":13.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/7193\/3106\/files\/9780486497051.jpg?v=1762736241","url":"https:\/\/backstory.london\/products\/9780486497051","provider":"Backstory","version":"1.0","type":"link"}