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  2. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  3. Angel problem - Wikipedia

    en.wikipedia.org/wiki/Angel_problem

    The blue dotted region shows where an angel of power 3 could reach. The angel problem is a question in combinatorial game theory proposed by John Horton Conway. The game is commonly referred to as the angels and devils game. [1] The game is played by two players called the angel and the devil.

  4. List of unsolved problems in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result. The others are experimental, meaning that there is a difficulty in creating an experiment to test a proposed theory or investigate a phenomenon in greater detail.

  5. Angles between flats - Wikipedia

    en.wikipedia.org/wiki/Angles_between_flats

    To produce accurate principal vectors in computer arithmetic for the full range of the principal angles, the combined technique [10] first compute all principal angles and vectors using the classical cosine-based approach, and then recomputes the principal angles smaller than π /4 and the corresponding principal vectors using the sine-based ...

  6. Suika Game - Wikipedia

    en.wikipedia.org/wiki/Suika_Game

    The game involves the player trying to build a high score by dropping fruits into a container without having them overflow out of the container. To earn points the player must combine two of the same fruits, which creates a new fruit in the game's fruit cycle. The game allows players to view other player's ranks through an online leaderboard.

  7. Haidao Suanjing - Wikipedia

    en.wikipedia.org/wiki/Haidao_suanjing

    Survey of sea island. Now we are surveying a sea island. Set up two 3-zhang poles at 1000 steps apart; let the two poles and the island be in a straight line. Step back from the front post 123 steps. With eye on ground level, the tip of the pole is on a straight line with the peak of island. Step back 127 steps from the rear pole. Eye on ground ...

  8. 7th Sea (role-playing game) - Wikipedia

    en.wikipedia.org/wiki/7th_Sea_(role-playing_game)

    7th Sea is a "swashbuckling and sorcery"-themed tabletop role-playing game by John Wick. [2] It is set in the fictional world of Théah, a fantasy version of 17th century Earth. Originally published by AEG, 7th Sea is currently published by Chaosium. The game won an Origins Award in 2000 and six ENNIE Awards in 2017.

  9. Maximum Ride: The Angel Experiment - Wikipedia

    en.wikipedia.org/wiki/Maximum_Ride:_The_Angel...

    Maximum Ride: The Angel Experiment has received generally positive reviews.Cleveland Plain Dealer described it as "like the best sort of video game or action movie, in book form" and commented that it "shows the promise of becoming a favorite" as well as comparing it to the Boxcar Children series: "Think of this group of six, from 14-year-old Max to 6-year-old Angel, like the 'Boxcar Children ...