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Fractional powers of the wave operator via Dirichlet-to-Neumann maps in anti-de Sitter spaces
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math.AP
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anti-dedirichlet-to-neumannfractionaloperatorsitterwaveappearedassociated
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We show that the fractional wave operator, which is usually studied in the context of hypersingular integrals but had not yet appeared in mathematical physics, can be constructed as the Dirichlet-to-Neumann map associated with the Klein-Gordon equation in anti-de Sitter spacetimes. Several generalizations of this relation will be discussed too.
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