### Biography

Jose Luis Massera Lerena, Italian-born Uruguayan mathematician (Genoa 08 June 1915 – Montevideo 09 September 2002)

Gained international recognition for his studies on non-linear differential equations

A much quoted paper

With J.J. Schaffer. Linear differential equations and function spaces (1966)

Massera lemma

On Liapounoff’s conditions of stability. Annals of Mathematics 50(3):705-21, 1949

Massera convergence theorem

The existence of periodic solutions of systems of differential equations. Duke Math.J. 17(4):457-75, 1950

Demonstrated variety stable theorem (1950s)

### INTRODUCED

Notion of admissibility with J.J. Schaeffer

Notion of exponential dichotomy (1958) with J.J. Schaeffer

New notions of stability

Definition of equiasymptotic stability with J.J. Schaeffer

Operator opening with J.J. Schaeffer

Concept of dichotomy of phase space with J.J. Schaeffer

### EPONYMY

Massera converse theorem

Massera functions

Massera equations

Massera principle

Massera condition

Massera criterion (1958)

Massera-Schaeffer existence theorem

Massera-Schaeffer inequality

Levinson-Massera inequalities

Malkin-Massera theorem

### HONORS

10690 Massera (Asteroid)