Friedrichs, Kurt Otto,  1901- <br/><br/>
A chapter in the theory of linear operators in Hilbert space:  based on lectures delivered at New York University, Spring 1951/ 
Notes by J. Berkowitz. 
 - [New York]:  1951]. 
 - 49 l.:  29 cm. 
<br/><br/> Reproduced from typewritten copy. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial.<br/>Hilbert space.
<br/><br/><label>Dewey Class. No.: </label>515  / F911c