Niccolò Fontana Tartaglia:
- Came up with a general solution to the cubic equation
- Published many books,
- Tartaglia's formula for the volume of a tetrahedron in terms of the distance values measured pairwise between its four corners
- generalises Heron's formula for the area of a triangle.
- Tartaglia's Triangle is another name for Pascal's Triangle:
- Applied mathematics to the investigation of the paths of cannonballs; his work was later validated by Galileo.
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Taken from Wikipedia:
- Perhaps Tartaglia is best known today for his feud with Gerolamo Cardano. Cardano pestered Tartaglia to reveal his solution to the cubic equations, promising not to publish them. Some years later, Cardano happened to see unpublished work by Scipione del Ferro who independently came up with the same solution as Tartaglia. As the unpublished work was dated before Tartaglia's, Cardano decided his promise could be broken, and included Tartaglia's solution in his next publication. Since Cardano credited his discovery, Tartaglia was furious.