Helmberg, Gilbert <br/><br/>
Introduction to spectral theory in Hilbert space / 
Gilbert Helmberg 
 - Amsterdam :  North-Holland Pub.,  1969 
 - xxiii, 346 p. ;  23 cm. 
 - North-Holland series in applied mathematics and mechanics ;  v. 6 .
<br/><br/>Bibliography: p. 330-333 
<br/><br/><label>ISBN: </label>0720423503 :  £ 80.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spectral theory (Mathematics)<br/>Hilbert space<br/>Linear operators
<br/><br/><label>Dewey Class. No.: </label>517.5