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math.AP2026

Higher order logarithms of Bessel operators and an extension problem

Jorge J. Betancor, Estefanía. Dalmasso, Juan C. Fariña +1

We consider the Bessel operator defined by \[ B_λ=-\frac{d^2}{dx^2}+\frac{λ^2-1/4}{x^2}, \] on , with . We study the fractional power , , $s\n…

math.AP2026

The logarithmic -Laplacian on hyperbolic spaces

Jorge J. Betancor, Lourdes Rodr\'ıguez-Mesa

In this paper, the logarithmic -Laplacian operator on the hyperbolic space , with , is introduced. We prove that if is a…

math.AP2026

On -order logarithmic Schrödinger operator

Jorge J. Betancor, Estefanía Dalmasso, Pablo Quijano +1

In this paper we study the logarithm of order of the Schrödinger operator in , for certain nonnegative potentials . First, the operator $\log^m\…

math.AP2026

Logarithmic Schrödinger operators

Jorge J. Betancor, Estefanía Dalmasso, Juan C. Fariña +1

In this paper we consider the Schrödinger operator in with a non negative potential , and . We define the logarithmic Schrö…

math.AP2025

Variational inequalities associated with the semigroups generated by fractional Kolmogorov operators

Jorge J. Betancor, Estefanía Dalmasso, Pablo Quijano

In this paper we consider fractional Kolmogorov operators defined, in , by \[Λ_κ=(-Δ)^{α/2}+\fracκ{|x|^α} x\cdot \nabla,\] with , and…

math.AP2024

Gaussian spaces

Jorge J. Betancor, Estefanía Dalmasso, Pablo Quijano

In this paper we introduce the John-Nirenberg's type spaces associated with the Gaussian measure in where