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  2. Inclusion (logic) - Wikipedia

    en.wikipedia.org/wiki/Inclusion_(logic)

    The modern symbol for inclusion first appears in Gergonne (1816), who defines it as one idea 'containing' or being 'contained' by another, using the backward letter 'C' to express this. Peirce articulated this clearly in 1870, arguing also that inclusion was a wider concept than equality, and hence a logically simpler one. [ 2 ]

  3. 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 ...

  4. Category:Logic puzzles - Wikipedia

    en.wikipedia.org/wiki/Category:Logic_puzzles

    Print/export Download as PDF; Printable version; In other projects ... Pages in category "Logic puzzles" The following 87 pages are in this category, out of 87 total.

  5. These 3D Brain Teaser Puzzles Require Logic and ... - AOL

    www.aol.com/lifestyle/3d-brain-teaser-puzzles...

    The best 3D brain teaser puzzles require logic and spatial awareness to make an exciting game of skill. From Kanoodle to Hanayama, here are the good ones. ... Best for Kids: Uncommon Goods T-Rex ...

  6. Self-reference puzzle - Wikipedia

    en.wikipedia.org/wiki/Self-reference_puzzle

    A self-reference puzzle is a type of logical puzzle where the question in the puzzle refers to the attributes of the puzzle itself. [1] A common example is that a "fill in the blanks" style sentence is given, but what is filled in the blanks can contribute to the sentence itself.

  7. Recreational mathematics - Wikipedia

    en.wikipedia.org/wiki/Recreational_mathematics

    Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.

  8. Mathematical puzzle - Wikipedia

    en.wikipedia.org/wiki/Mathematical_puzzle

    Mathematical puzzles require mathematics to solve them. Logic puzzles are a common type of mathematical puzzle. Conway's Game of Life and fractals, as two examples, may also be considered mathematical puzzles even though the solver interacts with them only at the beginning by providing a set of initial conditions. After these conditions are set ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!