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  2. Walter Trump - Wikipedia

    en.wikipedia.org/wiki/Walter_Trump

    He has made contributions working on both the square packing problem and the magic tile problem. In 1979 he discovered the optimal known packing of 11 equal squares in a larger square, [ 2 ] and in 2003, along with Christian Boyer , developed the first known magic cube of order 5. [ 3 ]

  3. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    The smallest (and unique up to rotation and reflection) non-trivial case of a magic square, order 3. In mathematics, especially historical and recreational mathematics, a square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same.

  4. Freudenthal magic square - Wikipedia

    en.wikipedia.org/wiki/Freudenthal_magic_square

    The Freudenthal magic square includes all of the exceptional Lie groups apart from G 2, and it provides one possible approach to justify the assertion that "the exceptional Lie groups all exist because of the octonions": G 2 itself is the automorphism group of the octonions (also, it is in many ways like a classical Lie group because it is the ...

  5. 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.

  6. Most-perfect magic square - Wikipedia

    en.wikipedia.org/wiki/Most-perfect_magic_square

    Apart from the trivial case of the first order square, most-perfect magic squares are all of order 4n. In their book, Kathleen Ollerenshaw and David S. Brée give a method of construction and enumeration of all most-perfect magic squares. They also show that there is a one-to-one correspondence between reversible squares and most-perfect magic ...

  7. Siamese method - Wikipedia

    en.wikipedia.org/wiki/Siamese_method

    The Siamese method, or De la Loubère method, is a simple method to construct any size of n-odd magic squares (i.e. number squares in which the sums of all rows, columns and diagonals are identical). The method was brought to France in 1688 by the French mathematician and diplomat Simon de la Loubère , [ 1 ] as he was returning from his 1687 ...

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  9. Associative magic square - Wikipedia

    en.wikipedia.org/wiki/Associative_magic_square

    For instance, the Lo Shu Square – the unique 3 × 3 magic square – is associative, because each pair of opposite points form a line of the square together with the center point, so the sum of the two opposite points equals the sum of a line minus the value of the center point regardless of which two opposite points are chosen. [4]