Helson, Henry <br/><br/>
Méthodes complexes et méthodes de Hilbert en analyse de Fourier/ 
par Henry Helson. 
 - [Orsay, France]:  Faculté des Sciences d'Orsay,  1967. 
 - 90 ;  29 cm. 
<br/><br/> Photocopy.  Lecture notes taken from the author's Lectures on invariant subspaces.  Imprint in manuscript on t.p.  Stamped on t.p.: New York University, Courant Institute, Library. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Hilbert, David 1862-1943. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invariants.<br/>Fourier analysis.
<br/><br/><label>Dewey Class. No.: </label>515.243   / H484m