Certain subclasses of the class of typically real functions
Given a function on with and , a procedure is exhibited for obtaining on a (finite) superharmonic majorant of the functionwhere is a certain (large) absolute constant. This leads to fairly constructive proofs of the two main multiplier theorems of Beurling and Malliavin. The principal tool used is a version of the following lemma going back almost surely to Beurling: suppose that , positive and bounded away from 0 on , is such that and denote, for any constant and each , the unique...