VECTOR VALUED REPRODUCING KERNEL HILBERT SPACES OF INTEGRABLE FUNCTIONS AND MERCER THEOREM

CLAUDIO CARMELI, ERNESTO DE VITO, ALESSANDRO TOIGO
2006 Analysis and Applications  
We characterize the reproducing kernel Hilbert spaces whose elements are p-integrable functions in terms of the boundedness of the integral operator whose kernel is the reproducing kernel. Moreover, for p = 2 we show that the spectral decomposition of this integral operator gives a complete description of the reproducing kernel, extending Mercer theorem.
doi:10.1142/s0219530506000838 fatcat:bcjadjkmnfa23ndoyrfe6fqwai