What is "pierre-simon"

Pierre-Simon is a French masculine given name, and may refer to:

• Pierre-Simon Ballanche (1776-1847), a French writer and counterrevolutionary philosopher
• Pierre Simon Fournier (1712-1768), a French typographer
• Pierre-Simon Girard (1765-1836), a French mathematician and engineer
• Pierre-Simon Laplace (1749-1827), a French mathematician and astronomer