Étienne d'Espagnet explained

Étienne d'Espagnet (born c. 1596) was the son of parliamentary counselor Jean d'Espagnet and Charlotte De Mangeau. He became a parliamentary counselor in 1617. He married in 1629 and had a son in 1634.[1]

He was friends with Viète and Fermat.[2] d'Espagnet shared mathematical interest with Fermat and was the recipient of at least some of Fermat's mathematical papers.[3]

Notes and References

  1. Book: Jean d' Espagnet. Jean D'Espagnet's the Summary of Physics Restored: The 1651 Translation with D'Espagnet's Arcanum (1650). 1999. Taylor & Francis. 978-0-8240-7542-2. 14–15.
  2. Web site: Jean Beaugrand - Biography.
  3. Book: Michael Sean Mahoney. The Mathematical Career of Pierre de Fermat, 1601-1665. 1994. Princeton University Press. 0-691-03666-7. 49–.

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