Leonardo of Pisa (Fibonacci) · Mathematics
Fibonacci’s masterpiece, the <em>Liber Quadratorum</em> (Book of Squares, 1225), on congruent numbers and sums of squares; the mathematical contest before Emperor Frederick II that provoked it; and the case that Fibonacci was a genuine, original number theorist - not merely the rabbit man - centuries ahead of his time.
You learned that Fibonacci’s Liber Quadratorum (1225) tackled congruent numbers and sums of squares, that it grew out of a mathematical contest at Frederick II’s court (the challenge to find a square staying square when 5 is added or subtracted, solved by 41/12), and that Fibonacci stated the identity - al…
Leads to Brahmagupta.
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