Latex symbol norm for vector and sum

Sunday 24 May 2020, by Nadir Soualem

Latex norm sum vector

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\lVert x \rVert

\lVert \cos x \rVert

\left\lVert \frac{1}{x} \right\rVert

\left\lVert \sum_{k=1}^n \alpha_k\right\rVert

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