Approximate Modeling for Supercritical Galton-Watson Branching Processes with Compound Poisson-Gamma Distribution

This paper demonstrates that the population-size distribution of supercritical Galton-Watson branching processes, in the asymptotic regime where the mean offspring number approaches one, can be effectively approximated by a compound Poisson-gamma distribution, a finding supported by numerical experiments and applicable to modeling cascaded multiplication processes.

Kyoya Uemura, Tomoyuki Obuch, Toshiyuki Tanaka2026-03-05🔢 math

Some Plancherel identities for unbounded subsets of R\mathbb R in duality

This paper establishes Plancherel-type identities and proves the surjectivity of the Fourier transform for certain unbounded dual tiling sets in R\mathbb{R}, demonstrating that an open set tiles the real line by the finite set {0,1,,p1}\{0,1,\dots,p-1\} if and only if it admits a spectrum given by the Lebesgue measure on [12p,12p]+Z\left[-\tfrac{1}{2p}, \tfrac{1}{2p}\right] + \mathbb{Z}.

Piyali Chakraborty, Dorin Ervin Dutkay2026-03-05🔢 math

Molecular Seeds of Shear: An operator-level necessity result for first-order Chapman-Enskog deviatoric stress

This paper establishes a rigorous operator-level necessity result proving that in closed, unforced kinetic systems, the first-order Chapman-Enskog deviatoric stress arises if and only if the first-order distribution correction f(1)f^{(1)} is nonzero, thereby filling a critical gap in the kinetic-to-continuum literature by demonstrating that vanishing f(1)f^{(1)} precludes the emergence of O(ε)O(\varepsilon) stress under precise functional-analytic conditions.

Tristan Barkman2026-03-05🔢 math

The complete $10tetrahedracensusoforientablecuspedhyperbolic-tetrahedra census of orientable cusped hyperbolic 3$-manifolds

This paper extends the complete census of orientable cusped hyperbolic 3-manifolds to 10 tetrahedra, identifying 150,730 new manifolds and their triangulations to determine 439,898 exceptional Dehn fillings, discover 1,849 new simplest hyperbolic knot exteriors, and provide the first example of such a manifold containing a closed totally geodesic surface.

Shana Yunsheng Li2026-03-05🔢 math