Is there special notation for a function like this:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]g(x_1)=\sum^k_jf(x)[/tex]

[tex]g(x_2)=\sum^p_k\sum^k_jf(x)[/tex]

[tex]g(x_3)=\sum^s_p\sum^p_k\sum^k_jf(x)[/tex]

If so, what would g(x_n) be?

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# Notation for special summations

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