Bernard Frénicle de Bessy

Bernard Frénicle de Bessy , born with Paris in the first decade of the 17th century, is a Mathématicien French.

Near to Mersenne Sailor, it took part in several scientific circles and was named member geometrician of the royal Académie of sciences to its creation in 1666. It was interested in astronomy and mechanics, but it is especially known for its work on the Théorie of the numbers and the Combinatoire. The standard Form of Frénicle, a standard representation of the magic square , is named in its honor. He also discovered the numbers taxicabs and he described all the magic squares primarily different of order 4; its process of construction and the magic squares obtained were published in posthumous title in 1693.

It defied Christiaan Huygens to solve the system of equations following in $\ mathbb {NR}$ ,

x^2+y^2 = z^2, \ x^2 = u^2+v^2, \ X there = u-v

A solution was found by Theophilus Pépin in 1880.

Publications

Calculation astronomic and appears of the eclipse of the sun which will arrive the 12 aoust 1654 (1654)
Solutio duorum problematum circa numbers cubos & quadratos, quae tanquam insolubilia universis Europae mathematicis has clarissimo viro D. Fermat sunt proposita, & AD D. Cl. Mr. Laurenderium doctorem medicum transmissa. WITH D.B.F.D.B. invented. Nec not. Combined duet problemata numerica has D. Cl. Mr. Laurenderio vicissim proposita, cum quibusdam solutionibus ab eodem D.F.D.B. datis. His certificate of merit. Inquisitio in solutionem prioris problematis with D. Francisco with Schooten in academia Lugduno Batava matheseos professore datam. In qua continentur. Sex aliae solve prioris problematis terminis analiticis ab eodem D.B.F. sub formed problematis datae. Insuper and. Solutio alterius problematis ab eodem Cl. viro D. Fermat circa defective numbers unitate with quadrato propositi, cum ipsius solutionis constructione (1657)
Treated right-angled triangles of numbers, in which several beautiful properties of these triangles are shown by new principles (1676) Text in line
Méthode to find the solution of the problems by exclusions. Summary of the combinations. Of Quarrez magic . Contents in Various works of mathematics and physics, by Misters of the royal Academy of sciences (1693)

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