 
Summary: ERRATA FOR
A SHORT COURSE ON SPECTRAL THEORY
William Arveson
Department of Mathematics
University of California
Berkeley CA 94720, USA
arveson@math.berkeley.edu
June, 2003
Abstract. This is a list of corrections I know about. Special thanks go to Launey
Thomas for catching many corrections that I had missed. I welcome additional
feedback from users of this text.
page 5. Exercise (5) is correctly stated, but the hint should be changed as follows.
Hint: Apply Ascoli's theorem to KB1.
page 11. In Exercise (1), the phrases xn X and y X should be replaced with
xn E and y E respectively.
page 12. Theorem 1.4.2: the inequality (2) should be
e 1
x Lx c x .
page 13. In Exercise (2), E should be a Banach space.
page 14. Line 3: "...satisfies 1 = 1".
