A Real Variable Method for the Cauchy Transform, and by Takafumi Murai PDF

By Takafumi Murai

ISBN-10: 3540190910

ISBN-13: 9783540190912

This learn monograph experiences the Cauchy rework on curves with the item of formulating an actual estimate of analytic ability. The be aware is split into 3 chapters. the 1st bankruptcy is a evaluate of the Calderón commutator. within the moment bankruptcy, a true variable approach for the Cauchy rework is given utilizing basically the emerging solar lemma. the ultimate and primary bankruptcy makes use of the tactic of the second one bankruptcy to check analytic means with integral-geometric amounts. the must haves for examining this e-book are easy wisdom of singular integrals and serve as thought. It addresses experts and graduate scholars in functionality idea and in fluid dynamics.

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Download e-book for iPad: A Real Variable Method for the Cauchy Transform, and by Takafumi Murai

This examine monograph experiences the Cauchy rework on curves with the thing of formulating an exact estimate of analytic ability. The observe is split into 3 chapters. the 1st bankruptcy is a evaluation of the Calderón commutator. within the moment bankruptcy, a true variable approach for the Cauchy remodel is given utilizing purely the emerging solar lemma.

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O). 40). min h2(0 ). 0<0<1 For any f + 2~ ~(l,E[a],f) _-< 3 ~(l,E[a], - - 3 ^ f + 2~ Const {q(l,E[a], ~ qE(~) ~ Const ~E(~) I12. 40), 0 = 113 + 2 DE( ) + C5 ~8 shows that + ~5} ( ~ ->_ i). 43) where ( ~ ~ i), ~E(~) ~ Const {~E(~) + ~}2 ~_ Const ~N N = 2N 0 + 2. Suppose that N ->_ 3. We put N+I ~m = sup{ ~E(~) ~ Then -c3 -<_ Const. For any ; i ~ ~ =< (3)m } 2 m >_- 4 and (3/2) m-I (m = 3,4 .... ). ~m_i + C6(~ p28) } )} + 8-(1/2) 2 (m-i)((i/2)-8) ~ Tm-i + C8(3) (2/3) (m-I)((1/2)-8) ~m <= ~3 + Const m-i Z k=3 We choose (_~)k/4°3<= Const, 8 1/4.

36) holds. 12. D. We now give the proof of Theorem B. (x ~ ~), Since i/(I + ix) = f0 e-iXs e-S ds we have C[a] = f~ E[-sa]e -s ds. 12, we have IIC[a]I12,2 =< f0 IIE[-sa]ll2,2 e-s ds NO Const f0 (I + sllall ) NO e -s ds _-< Const (i + IIall~) This completes the proof of Theorem B. 7. ] In this section, we show Theorem C ([44]). 39) IIC[a]I12,2~ Const (i +~IIalIBMO). 38) was given with was given with __~MO replaced by [44] via [42], [43], [50]. use RSL repeatedly. a(x), I, ~, ~ and we define analogously aretan y.

We have Then II{II~ =< 2~/3 ~, we have D(E[b]; ~) = ~2~(H;~) =< Const. Thus ~(I, E[a], f) ~ OE ( ) + ~E(~) + Const 6 , which yields that ~E(6) _-< OE( that is, ) +~ and 001(E[a]) + O~l(E[b]) =< Const ~ . 37) Let n OE(~) < 4 ~E(23 ~) + Const ~ . be the minimum of integers n =< (log ~)/(log 3/2) + Const. k->- 1 such that Inequality OE(~) =< 4 n ~ E ( ( 2 ) ~ ) (2/3)k~ ~ I. 37) shows that n-i % k=0 + Const 4 k (2)k3 -_< 4 n {~E(1) + Const (2)n ~} _-< Const where 4n_-< Const (i + ~) N0 , N O = (log 4)/(log 3/2).

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A Real Variable Method for the Cauchy Transform, and Analytic Capacity by Takafumi Murai


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