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  2. Will Shortz - Wikipedia

    en.wikipedia.org/wiki/Will_Shortz

    William F. Shortz (born August 26, 1952) is an American puzzle creator and editor who is the crossword editor for The New York Times. He graduated from Indiana University with a degree in the invented field of enigmatology. After starting his career at Penny Press and Games magazine, he was hired by The New York Times in 1993.

  3. Mathematical proof - Wikipedia

    en.wikipedia.org/wiki/Mathematical_proof

    A formal proof is written in a formal language instead of natural language. A formal proof is a sequence of formulas in a formal language, starting with an assumption, and with each subsequent formula a logical consequence of the preceding ones. This definition makes the concept of proof amenable to study.

  4. The New York Times crossword - Wikipedia

    en.wikipedia.org/wiki/The_New_York_Times_crossword

    The New York Times crossword is a daily American-style crossword puzzle published in The New York Times, syndicated to more than 300 other newspapers and journals, and released online on the newspaper's website and mobile apps as part of The New York Times Games. [1][2][3][4][5] The puzzle is created by various freelance constructors and has ...

  5. Shall and will - Wikipedia

    en.wikipedia.org/wiki/Shall_and_will

    Shall and will. Shall. and. will. Shall and will are two of the English modal verbs. They have various uses, including the expression of propositions about the future, in what is usually referred to as the future tense of English. Historically, prescriptive grammar stated that, when expressing pure futurity (without any additional meaning such ...

  6. Book - Wikipedia

    en.wikipedia.org/wiki/Book

    v. t. e. A book is a medium for recording information in the form of writing or images. Modern books are typically in codex format, composed of many pages that are bound together and protected by a cover; they were preceded by several earlier formats, including the scroll and the tablet.

  7. Logic puzzle - Wikipedia

    en.wikipedia.org/wiki/Logic_puzzle

    Another form of logic puzzle, popular among puzzle enthusiasts and available in magazines dedicated to the subject, is a format in which the set-up to a scenario is given, as well as the object (for example, determine who brought what dog to a dog show, and what breed each dog was), certain clues are given ("neither Misty nor Rex is the German Shepherd"), and then the reader fills out a matrix ...

  8. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.

  9. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [23] A COS tree file consists primarily of objects, of which there are nine types: [16] Boolean values, representing true or false; Real numbers ...