On the regular cosine family of linear correspondences (Q443923)

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scientific article; zbMATH DE number 6065220
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On the regular cosine family of linear correspondences
scientific article; zbMATH DE number 6065220

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    On the regular cosine family of linear correspondences (English)
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    13 August 2012
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    Let \(X\) and \(Y\) be normed spaces, \(X_0\) the completion of \(X\), \(C \subset X\) a convex cone with nonempty interior. For a continuous linear correspondence (multivalued linear operator) \(\varphi : C \multimap Y,\) the authors prove the existence of a unique continuous linear extension on \(cl_{X_0}C\). Some properties of a cosine family of continuous linear correspondences are studied.
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    linear correspondence
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    multivalued linear operator
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    cosine family
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    extension
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