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math.CA2015
Strictly positive definite kernels on a product of spheres
Jean C. Guella, Valdir A. Menegatto
For the real, continuous, isotropic and positive definite kernels on a product of spheres, one may consider not only its usual strict positive definiteness but also strict positive…
math.CA2015
Differentiable positive definite functions on two-point homogeneous spaces
V. S. Barbosa, V. A. Menegatto
In this paper we study continuous kernels on compact two point homogeneous spaces which are positive definite and zonal (isotropic). Such kernels were characterized by R. Gangolli…