. . . . . . . "Gödelian Puzzle Book Puzzles, Paradoxes and Proofs"@en . . "Electronic books"@en . "These recreational logic puzzles provide entertaining variations on Godel'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." . "These recreational logic puzzles provide entertaining variations on Godel'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."@en . . . "Gödelian puzzle book"@en . . . "The Gödeliäm puzzle book : puzzles, paradoxes and proofs"@en . . "The Gödelian puzzle book : puzzles, paradoxes and proofs" . . . . . . "Logic puzzles." . . "Gödel's theorem." . . "Mathematical recreations." . .