I don't understand how it is possible to show using the Minkowski's Inequality that(adsbygoogle = window.adsbygoogle || []).push({});

[itex] (\sum x_i )^a \leq \sum x_i^a[/itex] where [itex] x_i \geq 0 \forall i [/itex] and [itex] 0<a<1 [/itex].

I also tried to prove this without using Minkowski, but to no avail.

This is driving me crazy although it seems to be trivial in the literature.

I will appreciate any help

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# Minkowski's Inequality?

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