A note on suns in convex metric spaces
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We prove that in a convex metric space (X,d), an existence set K having a lower semi continuous metric projection is a ?-sun and in a complete M-space, a Chebyshev set K with a continuous metric projection is a ?-sun as well as almost convex.
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2019 ◽
Vol 10
(4)
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pp. 437-446
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