Leonhard Euler

Berlin

Burton Acres Park (wta.org) The south end of Vashon Island is quieter than the business district, making it a lovely place to take a calming walk with your family. Burton Acres park offers a short but fulfilling hike. The 64-acre park features more than 1.2 miles of trails to explore on a loop route.

il cessa de calculer et de vivre— … he ceased to calculate and to live. Marquis de Condorcet on the death of Euler
Read Euler, read Euler, he is the master of us all. Pierre-Simon Laplace

Leonhard Euler (Wikipedia) Leonhard Euler (/ˈɔɪlər/ OY-lər, German: [ˈleːɔnhaʁt ˈʔɔʏlɐ], Swiss Standard German: [ˈleːɔnhart ˈɔʏlər]; 15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician, and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in many other branches of mathematics such as analytic number theory, complex analysis, and infinitesimal calculus. He introduced much of modern mathematical terminology and notation, including the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.