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  2. Plimpton 322 - Wikipedia

    en.wikipedia.org/wiki/Plimpton_322

    Plimpton 322 is a Babylonian clay tablet, believed to have been written around 1800 BC, that contains a mathematical table written in cuneiform script.Each row of the table relates to a Pythagorean triple, that is, a triple of integers (,,) that satisfies the Pythagorean theorem, + =, the rule that equates the sum of the squares of the legs of a right triangle to the square of the hypotenuse.

  3. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    The oldest known multiplication tables were used by the Babylonians about 4000 years ago. [2] However, they used a base of 60. [2] The oldest known tables using a base of 10 are the Chinese decimal multiplication table on bamboo strips dating to about 305 BC, during China's Warring States period. [2] "Table of Pythagoras" on Napier's bones [3]

  4. Shulba Sutras - Wikipedia

    en.wikipedia.org/wiki/Shulba_Sutras

    The oldest is the sutra attributed to Baudhayana, possibly compiled around 800 BCE to 500 BCE. [2] Pingree says that the Apastamba is likely the next oldest; he places the Katyayana and the Manava third and fourth chronologically, on the basis of apparent borrowings. [3]

  5. Pythagoreanism - Wikipedia

    en.wikipedia.org/wiki/Pythagoreanism

    For Pythagorean philosophers, the basic property of numbers was expressed in the harmonious interplay of opposite pairs. Harmony assured the balance of opposite forces. [ 42 ] Pythagoras had in his teachings named numbers and the symmetries of them as the first principle and called these numeric symmetries harmony. [ 43 ]

  6. Pythagoras - Wikipedia

    en.wikipedia.org/wiki/Pythagoras

    The Pythagorean theorem was known and used by the Babylonians and Indians centuries before Pythagoras, [216] [214] [217] [218] but he may have been the first to introduce it to the Greeks. [219] [217] Some historians of mathematics have even suggested that he—or his students—may have constructed the first proof. [220]

  7. Pythagoras number - Wikipedia

    en.wikipedia.org/wiki/Pythagoras_number

    In mathematics, the Pythagoras number or reduced height of a field describes the structure of the set of squares in the field. The Pythagoras number p ( K ) of a field K is the smallest positive integer p such that every sum of squares in K is a sum of p squares.

  8. IM 67118 - Wikipedia

    en.wikipedia.org/wiki/IM_67118

    IM 67118, also known as Db 2-146, is an Old Babylonian clay tablet in the collection of the Iraq Museum that contains the solution to a problem in plane geometry concerning a rectangle with given area and diagonal. In the last part of the text, the solution is proved correct using the Pythagorean theorem. The steps of the solution are believed ...

  9. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    Babylonian tablet (c. 1800–1600 BCE), showing an approximation of √ 2 (1 24 51 10 in sexagesimal) in the context of the Pythagorean theorem for an isosceles triangle. Written mathematics began with numbers expressed as tally marks, with each tally representing a single unit. Numerical symbols consisted probably of strokes or notches cut in ...