Topological and rigidity results for four-dimensional hypersurfaces in space forms

This paper establishes topological and rigidity results for four-dimensional hypersurfaces in five-dimensional space forms by characterizing isoparametric hypersurfaces via the Weyl tensor, deriving sharp bounds on the Weyl functional, estimating the second fundamental form in terms of the Euler characteristic, and proving rigidity through integral inequalities, with extensions to locally conformally flat ambient spaces.

Davide Dameno, Aaron J. Tyrrell2026-03-05🔢 math

A successive difference-of-convex method for a class of two-stage nonconvex nonsmooth stochastic conic program via SVI

This paper proposes a successive difference-of-convex method that leverages Moreau envelopes and the progressive hedging algorithm to solve a class of challenging two-stage nonconvex nonsmooth stochastic conic programs by reformulating them as nonmonotone nonsmooth stochastic variational inequalities, with theoretical convergence guarantees and numerical validation via an extended Markowitz model.

Chao Zhang, Di Wang2026-03-05🔢 math

Equi-Baire One Families of Möbius Transformations and One-Parameter Subgroups of PSL(2,C\mathrm{PSL}(2,\mathbb{C})

This paper investigates the Equi-Baire one property for families of Möbius transformations, demonstrating that iterates of loxodromic maps form such a family on their attracting basins and establishing that a one-parameter subgroup satisfies this condition on all compact sets if and only if it is relatively compact in SL(2,C)\mathrm{SL}(2,\mathbb{C}).

Sandipan Dutta, Vanlalruatkimi, Jonathan Ramdikpuia2026-03-05🔢 math

Linearized Stability of Non-Isolated Equilibria of Quasilinear Parabolic Problems in Interpolation Spaces

This paper establishes the linearized stability of non-isolated equilibria for quasilinear parabolic problems within interpolation spaces, utilizing a flexible approach with low regularity requirements on the semilinear term to extend previous maximal regularity results and apply to concrete models like the Hele-Shaw problem and fractional mean curvature flow.

Bogdan-Vasile Matioc, Christoph Walker2026-03-05🔢 math

Steady State Distribution and Stability Analysis of Random Differential Equations with Uncertainties and Superpositions: Application to a Predator Prey Model

This paper presents a Monte Carlo-based computational framework to analyze the steady-state distributions and stability of random differential equations with uncertain, multi-modal parameters, demonstrating its efficacy through a Rosenzweig-MacArthur predator-prey model that reveals complex, multi-modal equilibrium behaviors.

Wolfgang Hoegele2026-03-05🔢 math

A criterion for modules over Gorenstein local rings to have rational Poincaré series

This paper establishes that modules over specific classes of Gorenstein local rings, including those where R/\soc(R)R/\soc(R) is a Golod ring or the square of the maximal ideal is generated by at most two elements, possess rational Poincaré series with a common denominator, thereby confirming the Auslander-Reiten conjecture for these rings and providing new proofs for existing results on compressed and low codepth rings.

Anjan Gupta2026-03-05🔢 math

Catching jumps of metric-valued mappings with Lipschitz functions

This paper demonstrates that while a continuous map into a metric space is of bounded variation if and only if its composition with every Lipschitz function is of bounded variation, this characterization fails for discontinuous maps in spaces like 2\ell_2, infinite metric trees, and Laakso-type spaces, though it remains valid for ultrametric spaces without continuity assumptions.

Dmitriy Stolyarov, Alexander Tyulenev2026-03-05🔢 math