Three Revolutions in The Kernel Are Worse Than One
Author(s) -
Benjamin Jaye,
Fëdor Nazarov
Publication year - 2017
Publication title -
international mathematics research notices
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.757
H-Index - 76
eISSN - 1687-0247
pISSN - 1073-7928
DOI - 10.1093/imrn/rnx101
Subject(s) - mathematics , kernel (algebra) , singular integral , bounded function , principal value , almost everywhere , measure (data warehouse) , cauchy distribution , combinatorics , pure mathematics , mathematical analysis , integral equation , database , computer science
An example is constructed of a purely unrectifiable measure $\mu$ for which the singular integral operator whose kernel triples and reverses the argument of a complex number is bounded $L^2(\mu)$. This is in sharp contrast with the results known for the Cauchy transform, whose kernel reverses the argument of a complex number.
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