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Results tagged with convexity
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user 163586
For questions involving the concept of convexity
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Is this $(\Bbb R^{n \times n})^n \to \Bbb R$ function convex?
Let $W := (W_1, W_2,\dots, W_n)$, where $W_i \in \Bbb R^{n \times n}$. Let $x$ be a constant vector. Is the following function convex?
$$f(W) := x^TW_1^TW_2^T \cdots W_n^TW_n \cdots W_2W_1x $$
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