Lecture series of the symposium on partial differential equations,:  held at the University of California, at Berkeley, June 20-July 1, 1955/ 
sponsored by Office of Naval Research [and others] Editorial committee: N. Aronszajn, C. B. Morrey, Jr. 
 - [Lawrence]:  Dept. of Mathematics, University of Kansas,  1957. 
 - 149 p.:  26 cm., 
<br/><br/> "Contains three of the five lecture series...The lectures of Professor Lax have been extended and are presented...under two title." 
<br/><br/>Includes bibliographies. 
<br/><br/>On non-linear partial differential equations, by E. Hopf.--Difference approximation to solutions of linear differential equations, an operator theoretical approach, by P. D. Lax.--A Phragmen-Lindelof principle in harmonic analysis, with applications to the separation of variables in the theory of elliptic equations, by P. D. Lax.--Partial differential equations of the elliptic type, by M. M. Schiffer . 
<br/><br/><label>LCCN: </label>57062629 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial.
<br/><br/><label>Dewey Class. No.: </label>515.35  / L471