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math.AP2013
Wavelets, Multiplier spaces and application to Schrödinger type operators with non-smooth potentials
Pengtao Li, Qixiang Yang, Yueping Zhu
In this paper, we employ Meyer wavelets to characterize multiplier spaces between Sobolev spaces without using capacity. Further, we introduce logarithmic Morrey spaces $M^{t,τ}_{r…
math.AP2006
Positivity and strong ellipticity
A. F. M. ter Elst, Derek W. Robinson, Yueping Zhu
We consider second-order partial differential operators in divergence form on $\Ri^d$ with a positive-semidefinite, symmetric, matrix of real -coefficients and es…