Gaussian Integral Means of Entire Functions

preprint2013arXivOpen access

Abstract

For an entire mapping f:C↦Cf:\mathbb C\mapsto\mathbb C and a triple (p,α,r)∈(0,∞)×(−∞,∞)×(0,∞](p,α, r)\in (0,\infty)\times(-\infty,\infty)\times(0,\infty], the Gaussian integral means of ff (with respect to the area measure dAdA) is defined by Mp,α(f,r)=(∫∣z∣<re−α∣z∣2dA(z))−1∫∣z∣<r∣f(z)∣pe−α∣z∣2dA(z). {\mathsf M}_{p,α}(f,r)=\Big({\int_{|z|<r}e^{-α|z|^2}dA(z)}\Big)^{-1}{\int_{|z|<r}|f(z)|^p{e^{-α|z|^2}}dA(z)}. Via deriving a maximum principle for Mp,α(f,r){\mathsf M}_{p,α}(f,r), we establish not only Fock-Sobolev trace inequalities associated with Mp,p/2(zmf(z),∞){\mathsf M}_{p,p/2}(z^m f(z),\infty) (as m=0,1,2,...m=0,1,2,...), but also convexities of r↦ln⁡Mp,α(zm,r)r\mapsto\ln {\mathsf M}_{p,α}(z^m,r) and r↦M2,α<0(f,r)r\mapsto {\mathsf M}_{2,α<0}(f,r) in ln⁡r\ln r with 0<r<∞0<r<\infty.

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