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I am interesting to find some functions g satisfying the following convolution inequality

(g[itex]\ast[/itex]v)(t)[itex]\leq[/itex]v(t)

for any positive function v[itex]\in[/itex]L[itex]^{1}[/itex][0,T] and * denotes the convolution between g and v.

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# A convolution inequality

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