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arXiv · 0810.5352

Orthogonally additive holomorphic functions of bounded type over $C(K)$

Daniel Carando·Silvia Lassalle·Ignacio Zalduendo
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Abstract

It is known that all $k$-homogeneous orthogonally additive polynomials $P$ over $C(K)$ are of the form $$ P(x)=\int_K x^k d\mu . $$ Thus $x\mapsto x^k$ factors all orthogonally additive polynomials through some linear form $\mu$. We show that no such linearization is possible without homogeneity. However, we also show that every orthogonally additive holomorphic functions of bounded type $f$ over $C(K)$ is of the form $$ f(x)=\int_K h(x) d\mu $$ for some $\mu$ and holomorphic $h\colon C(K) \to L^1(\mu)$ of bounded type.

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Daniel Carando, Silvia Lassalle, Ignacio Zalduendo. 2008-10-29. Orthogonally additive holomorphic functions of bounded type over $C(K)$. https://arxiv.org/abs/0810.5352

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