Continuity of modulus of noncompact convexity for minimalizable measures of noncompactness

Nermin Okičić

Abstract


We consider the modulus of noncompact convexity
$\Delta_{X,\phi}(\varepsilon)$ associated with the minimalizable measure of noncompactness $\phi$. We present some properties of this modulus, while the main result of this paper is showing that $\Delta _{X,\phi }(\varepsilon)$ is a subhomogenous and continuous function on $[0,\phi (B_X))$ for an arbitrary minimalizable measure of compactness $\phi$ in the case of a Banach space $X$ with the Radon-Nikodym property.


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