Abstract
In this article we consider orthogonally additive operators on lattice-normed spaces. In the first part of the article we present some examples of narrow, laterally-to-norm continuous and C-compact operators defined on a lattice-normed space and taking value in a Banach space. We show that any laterally-to-norm continuous narrow orthogonally additive operator defined on a decomposable lattice-normed space (V, E) over an atomic vector lattice E with the projection property is equal to zero. In the second part we prove that the sum of two orthogonally additive operators \(T+S\) defined on a order complete, decomposable lattice-normed space V and taking value in Banach space X, where \(T:V\rightarrow X\) is a laterally-to-norm continuous C-compact operator and \(S:V\rightarrow X\) is a narrow operator, is a narrow operator as well.
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Acknowledgements
Marat Pliev was supported by the Russian Foundation for Basic Research (Grant No. 17-51-12064). Martin Weber was supported by the Deutsche Forschungsgemeinschaft (Grant No. CH 1285/5-1, Order preserving operators in problems of optimal control and in the theory of partial differential equations).
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Pliev, M., Polat, F. & Weber, M. Narrow and C-compact Orthogonally Additive Operators in Lattice-Normed Spaces. Results Math 74, 157 (2019). https://doi.org/10.1007/s00025-019-1075-y
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DOI: https://doi.org/10.1007/s00025-019-1075-y
Keywords
- Orthogonally additive operator
- C-compact operator
- narrow operator
- integral operator
- Köthe–Bochner space
- vector lattice
- lattice-normed space