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5 papers

gr-qc2026

Rainbow McVittie Horizons in an Expanding Universe

Amani Ashour, Ahmed Farag Ali

We derive the Friedmann dynamics and apparent-horizon thermodynamics of a spatially flat McVittie spacetime in Gravity's Rainbow and construct a consistent non-accreting perfect-fl…

math.DG2026

Golden and Metallic Structures on Hessian Manifolds

Jonathan Washburn, Milan Zlatanović

The paper studies a degenerate Hessian geometry arising from a reciprocal cost function and introduces a family of nondegenerate Hessian metrics to build a (1,1)-tensor whose trace…

math.DG2026

Multidimensional cost geometry

Jonathan Washburn, Milan Zlatanović, Philip Beltracchi

In this paper, we study the geometric structure induced by the canonical reciprocal cost function and its natural -dimensional extension. In logarithmic coordinates, the potenti…

math.DG2026

Einstein connection of nonsymmetric pseudo-Riemannian manifold, II

Vladimir Rovenski, Milan Zlatanović, Miroslav Maksimović

Advances in modern physics since Einstein have made the nonsymmetric metric (0,2)-tensor , where is a pseudo-Riemannian metric associated with gravity, and is a…

math.CA2026

The d'Alembert Inevitability Theorem

Jonathan Washburn, Milan Zlatanović, Elshad Allahyarov

We study functions satisfying the composition law with a symmetric polynomial combiner . We prove that symmetry together with a quadratic degree boun…