THEOREM 23. Let K be an integral operator on L2([a, b], a) KS = [°xe K(x, y)f(y) da(y) where T| K(x, 9)* da(+) du(y) < co. Then K is a compact operator.

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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Prove
THEOREM 23. Let K be an integral operator on L2([a, b], a)
K(x,
y)S(y) da(y)
where
||IK(x, y)* da(x) dz(y) < ∞.
2
Then K is a compact operator.
Transcribed Image Text:THEOREM 23. Let K be an integral operator on L2([a, b], a) K(x, y)S(y) da(y) where ||IK(x, y)* da(x) dz(y) < ∞. 2 Then K is a compact operator.
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