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This article is cited in 9 scientific papers (total in 9 papers)
On the question of the existence of continuous branches of multivalued mappings with nonconvex images in spaces of summable functions
A. I. Bulgakov
Abstract:
Let $B$ be a Banach space with norm $\|\cdot\|$, and let $(E,\mathfrak M)$ be a compact topological space with $\sigma$-algebra of measurable sets $\mathfrak M$ on which a nonnegative regular Borel measure $\mu$ is given. Further, let $L_1(E,B)$ be the Banach space of Bochner-integrable functions $u\colon E\to B$, with the norm $\|u\|_{L_1(E,B)}=\int_E\|u(t)\|\,d\mu$, and let $\Phi\colon K\to2^{L_1(E,B)}$ be a multivalued mapping and $P\colon K\to L_1(E,B)$ a single-valued mapping, where $K$ is a compact topological space. Under certain assumptions it is proved that for any $\varepsilon>0$ there exists a continuous mapping $g\colon K\to L_1(E,B)$ such that the following conditions hold for any $x\in K$: $g(x)\in\Phi(x)$, and $\|P(x)-g(x)\|_{L_1(E,B)}<\rho_{L_1(E,B)}[P(x),\Phi(x)]+\varepsilon$, where $\rho_{L_1(E,B)}[\,\cdot\,{,}\,\cdot\,]$ is the distance in $L_1(E,B)$ from a point to a set.
Bibliography: 11 titles.
Received: 13.01.1987
Citation:
A. I. Bulgakov, “On the question of the existence of continuous branches of multivalued mappings with nonconvex images in spaces of summable functions”, Mat. Sb. (N.S.), 136(178):2(6) (1988), 292–300; Math. USSR-Sb., 64:1 (1989), 295–303
Linking options:
https://www.mathnet.ru/eng/sm1742https://doi.org/10.1070/SM1989v064n01ABEH003308 https://www.mathnet.ru/eng/sm/v178/i2/p292
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Abstract page: | 257 | Russian version PDF: | 77 | English version PDF: | 8 | References: | 50 |
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