3. Consider the set e = x (x1, x2, x3,. . .) E C : i=1 consisting of all absolutely summable infinite sequences of complex numbers. a) Show that l1 is a complex vector space. b) Show that 8. ||x||1 = lr| 2=1 defines a norm on l.

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Chapter5: Inner Product Spaces
Section5.CM: Cumulative Review
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3. Consider the set
l' = {x = (x1, x2, x3,...) E C :
i=1
consisting of all absolutely summable infinite sequences of complex numbers.
a) Show that l1 is a complex vector space.
b) Show that
8.
||x||1 = la|
2=1
defines a norm on l.
Transcribed Image Text:3. Consider the set l' = {x = (x1, x2, x3,...) E C : i=1 consisting of all absolutely summable infinite sequences of complex numbers. a) Show that l1 is a complex vector space. b) Show that 8. ||x||1 = la| 2=1 defines a norm on l.
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