As an example of an inner product space that is not a Hilbert space, consider the inear space C[a, b] (Example 1.2) with inner product of f, g € C[a, b] defined to be (f. g) = f*f(x)g(x) dx. f a sequence of functions from C[a, b], {f} converges with respect to the norm lefined by this inner product, they will only converge “in the mean!" Since mean convergence does not necessarily imply uniform convergence it is seen that this paces does not have to be complete and the counterexample Example 4.4) shows hat this is actually so. Request explain which is this norm?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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As an example of an inner product space that is not a Hilbert space, consider the
linear space C[a, b] (Example 1.2) with inner product of f, g e C[a, b] defined to be
(f, g) = f*ƒ(x)g(x) dx.
If a sequence of functions from C[a, b], {f} converges with respect to the norm
defined by this inner product, they will only converge "in the mean!" Since mean
convergence does not necessarily imply uniform convergence it is seen that this
spaces does not have to be complete and the counterexample Example 4.4) shows
that this is actually so.
• Request explain
which is this norm?
Request explain with example
Transcribed Image Text:As an example of an inner product space that is not a Hilbert space, consider the linear space C[a, b] (Example 1.2) with inner product of f, g e C[a, b] defined to be (f, g) = f*ƒ(x)g(x) dx. If a sequence of functions from C[a, b], {f} converges with respect to the norm defined by this inner product, they will only converge "in the mean!" Since mean convergence does not necessarily imply uniform convergence it is seen that this spaces does not have to be complete and the counterexample Example 4.4) shows that this is actually so. • Request explain which is this norm? Request explain with example
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