Eduardo Hector Zarantonello Lanari, Argentine mathematician (Buenos Aires 04 June 1918 – Mendoza 13 January 2010)

Son of Italian immigrants

With G. Birkhoff wrote Jets, Wakes and Cavities (1957), a classical book on advanced topics of theoretical hydrodynamics

INTRODUCED

A constructive theorem for the equations of flows with free boundaries (1950)

Monotone operators (1960) independent from Kachurovsky (1960) & Minty (1962)

Monotone maps (1960) independent from Vainberg & Kachurovsky

Generalized projection operator

Concept of numerical range of non-linear Hilbert space operators (1964)

EPONYMY

Zarantonello inequality

Zarantonello theorem (1960)

Zarantonello numerical range

Zarantonello condition