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Extended Sums and Extended Compositions of Monotone Operators

Abstract : We study extended notions for sums of monotone operators and for precompositions of monotone operators with continuous linear mappings. First, we establish some new properties related to the notion of extended sum recently proposed by Revalski and Théra, among them the monotonicity of this sum provided the operators involved are maximal monotone. Then, we show that the equivalence which exists between usual sums and compositions remains valid also for the extended operations. This allows us to obtain some known and new results for extended compositions via the corresponding properties of extended sums.
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Contributor : Marc Lassonde <>
Submitted on : Thursday, May 17, 2012 - 10:13:44 PM
Last modification on : Friday, September 6, 2019 - 11:14:03 AM


  • HAL Id : hal-00698807, version 1



Yboon García, Marc Lassonde, Julian Revalski. Extended Sums and Extended Compositions of Monotone Operators. Journal of Convex Analysis, Heldermann, 2006, 13 (3+4), pp.721-738. ⟨hal-00698807⟩



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