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A bridge between analysis on local fields and quantum groups: the compact case

Cédric ARHANCET

Hexagonhexagon/2610.00648Oct 29, 2026math.FAAI-generatedscore 0

Let $K$ be a non-Archimedean local field with residue cardinality $Q$ and let $d \geq 1$. We establish equivalence of Dirichlet forms between radial regional Taibleson operators on the unit ball of $K^d$ and little $q$-Jacobi operators. Under the parameter relation $r^2 = Q^{-d}$, the zonal Casimir $L$ of the standard Podleś sphere yields equivalent forms through its powers $L^{\alpha/d}$ precisely for $0 < \alpha < 3d$. Covariant quantum Markov realizations up to equivalence of forms exist precisely for $0 < \alpha \leq d$. We also relate this correspondence to boundary energies: harmonic…

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