, 1) Let L : l2 → l2 be the left орeгatol --I- --. L(a1, a2, a3, ...) = (a2; a3; a4, ...) for all a = a) Show that L is a linear and continuous operator, that is L E CL(l2). Find ||L||, the (a1, a2, a3...) E l2. operator norm of L. b) Show that each point in the open disk D = {zEC: Izl <1} is an eigenvalue of L.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
Problem 12EQ
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1) Let L : l2 → 12 be the left shift operator defined by
--
L(a1, a2, a3, ...) = (a2; a3, a4,...) for all a =
a) Show that L is a linear and continuous operator, that is L E CL(l2). Find ||L||, the
(a1, a2, a3...) E l2.
%3D
operator norm of L.
b) Show that each point in the open disk D = {z €C: |2| <1} is an eigenvalue of L.
Transcribed Image Text:1) Let L : l2 → 12 be the left shift operator defined by -- L(a1, a2, a3, ...) = (a2; a3, a4,...) for all a = a) Show that L is a linear and continuous operator, that is L E CL(l2). Find ||L||, the (a1, a2, a3...) E l2. %3D operator norm of L. b) Show that each point in the open disk D = {z €C: |2| <1} is an eigenvalue of L.
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