Endpoint Estimates for Oscillatory Singular Integrals with H?lder Class Kernels

摘要

We prove the uniform L1→L1,∞ and HE1→L1 boundedness of oscillatory singular integral operators whose kernels are the products of an oscillatory factor with bilinear phase and a Calderón-Zygmund kernel K(x,y) satisfying a H?lder condition. This H?lder condition appreciably weakens the C1 condition imposed in existing literature.