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AREA INTEGRAL FUNCTIONS AND H∞ FUNCTIONAL CALCULUS FOR SECTORIAL OPERATORS ON HILBERT SPACES

AREA INTEGRAL FUNCTIONS AND H∞ FUNCTIONAL CALCULUS FOR SECTORIAL OPERATORS ON HILBERT SPACES
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摘要 Area integral functions are introduced for sectorial operators on Hilbert spaces. We establish the equivalence relationship between the square and area integral functions. This immediately extends McIntosh/Yagi's results on H∞ functional calculus of sectorial operators on Hilbert spaces to the case when the square functions are replaced by the area integral functions. Area integral functions are introduced for sectorial operators on Hilbert spaces. We establish the equivalence relationship between the square and area integral functions. This immediately extends McIntosh/Yagi's results on H∞ functional calculus of sectorial operators on Hilbert spaces to the case when the square functions are replaced by the area integral functions.
作者 陈泽乾 孙牧
出处 《Acta Mathematica Scientia》 SCIE CSCD 2013年第4期989-997,共9页 数学物理学报(B辑英文版)
基金 Z.Chen is partially supported by NSFC(11171338)
关键词 sectorial operator H∞ functional calculus area integral function squarefunction Hilbert space sectorial operator H∞ functional calculus area integral function squarefunction Hilbert space
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