1494 Luca Pacioli (Leonardo da vinci's math teacher): "Summa de Arithmetica"
Omar Khayyam
Scipione Del Ferro; mathematics professor
Antonio Fior - inherits the solution from his master Sciopione
Then challenges Niccolo Fontana Tartaglia

Tartaglia reveals his method on March 25 1539 in Milan to Cardono


cubic equation: ax³ + bx² + cx + d = 0

quadratic: -b +- sq root of [b^{2 -} 4ac]

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2a

Cardano: Ars Magna *The Great Art

François Viète

René Descartes

1925 Erwin Schrödinger wave equation

De Broglie; matter consists of waves