arXiv research

Study generalizes Picard iteration for nonlinear PDEs, deriving bounds on error.

Paper quantifies neural operators' efficiency for solving nonlinear parabolic PDEs.

Proves existence and uniqueness of SDE solutions with Lipschitz coefficients driven by continuous martingales.

Solves optimal stopping for Gauss-Markov bridges using time-space transformation.

In this article we introduce algorithms which compute iterations of Gauss-Manin connections, Picard-Fuchs equations of Abelian integrals and mixed Hodge structure of affine varieties of dimension $n$ in terms of differential forms. In the case $n=1$ such computations have many applications in differential equations and…

Paper proposes a new method to solve Schrödinger Bridge Problem using kernel regression.

Develops a numerical scheme for solving path-dependent FBSDEs and PDEs.

DreamPropeller accelerates text-to-3D generation by 4.7x with minimal loss in quality.

Researchers find the optimal exercise time for American options using a specific type of diffusion process.

New learning scheme solves high-dimensional semi-linear PDEs using sparse grids and Picard approximations.

New method speeds up diffusion models inference to sub-linear time.

Improved solver maintains positivity and accuracy across all time steps.

New algorithms compute Volterra signature efficiently for time series analysis.

We describe a set of Gaussian Process based approaches that can be used to solve non-linear Ordinary Differential Equations. We suggest an explicit probabilistic solver and two implicit methods, one analogous to Picard iteration and the other to gradient matching. All methods have greater accuracy than previously sugge…

Researchers found the global topology of the Eisenstein-Picard modular surface.

A quaternionic version of Picard's theorem limits how many values a slice regular function can avoid.

New method finds 198,846 toric-colorable seeds of Picard number 5.

Picard modular groups are shown to be generated by complex reflections.

The paper presents presentations for Euclidean Picard modular groups.

We determine the number of cusps of minimal Picard modular surfaces. The proof also counts cusps of other Picard modular surfaces of arithmetic interest. Consequently, for each N > 0 there are finitely many commensurability classes of nonuniform arithmetic lattices in SU(2, 1) that contain an N-cusped surface. We also …

We study the Picard groups of moduli spaces of smooth complex projective curves that have a group of automorphisms with a prescribed topological action. One of our main tools is the theory of symmetric mapping class groups. In the first part of the paper, we show that, under mild restrictions, the moduli spaces of smoo…

Method constructs fundamental domains for Picard modular groups.

The aim of this work is to provide fast and accurate approximation schemes for the Monte Carlo pricing of derivatives in LIBOR market models. Standard methods can be applied to solve the stochastic differential equations of the successive LIBOR rates but the methods are generally slow. Our contribution is twofold. Firs…

We study deformation of spherical $CR$ circle bundles over Riemann surfaces of genus > 1. There is a one to one correspondence between such deformation space and the so-called universal Picard variety. Our differential-geometric proof of the structure and dimension of the unramified universal Picard variety has its own…

Heat kernel resurgent structure from Picard-Lefschetz theory

We compute the Picard group of a stable b-symplectic manifold $M$ by introducing a collection of discrete invariants $\mathfrak{Gr}$ which classify $M$ up to Morita equivalence.

Smooth Schubert varieties in rational homogeneous manifolds of Picard number 1 are horospherical varieties. We characterize standard embeddings of smooth Schubert varieties in rational homogeneous manifolds of Picard number 1 by means of varieties of minimal rational tangents. In particular, we mainly consider nonhomog…

Constructs stable bundles on K3 surfaces using monad construction.

Study shows no hyperkähler fourfolds in specified conditions.

Study of rational Picard group in moduli space of holomorphic n-differentials.

Researchers characterize a specific type of projective variety based on its tangents.

Logarithmic Picard algebroids solve meromorphic line bundle prequantization.

Classifies Real primary Hopf surfaces and their associated groups.

Geometric structures modeled on rational homogeneous manifolds are studied to characterize rational homogeneous manifolds and to prove their deformation rigidity. To generalize these characterizations and deformation rigidity results to quasihomogeneous varieties, we first study horospherical varieties and geometric st…

The paper classifies diffeomorphism classes of Calabi-Yau threefolds constructed by gluing methods.

This note is a report on the observation that some singular varieties admit Calabi--Yau coverings. As an application, we construct 18 new Calabi--Yau 3-folds with Picard number one that have some interesting properties.

Kähler-Einstein metrics found on special types of symmetric varieties.

Found a stable 3D shape with specific properties.

New K3 surfaces with two involutions and low Picard number constructed.

For a Poisson manifold $M$ we develop systematic methods to compute its Picard group $Pic(M)$, i.e., its group of self Morita equivalences. We establish a precise relationship between $Pic(M)$ and the group of gauge transformations up to Poisson diffeomorphisms showing, in particular, that their connected components of…

Computes Picard groups of complex parallelizable manifolds.

The paper proves two theorems about solutions to certain PDE systems.

Survey connects singularity invariants to link pairings.

Study geometric properties of a complex hyperbolic group action.

Constructs explicit nontrivial cycles in Habiro cohomology of smooth varieties.

Hybrid lattices produce subgroups of PU(n,1) from PU(n-1,1) lattices.

Study calculates Ricci bounds for special Fano manifolds.

The loop space of the Riemann sphere consisting of all $C^k$ or Sobolev $W^{k,p}$ maps from the circle $S^1$ to the sphere is an infinite dimensional complex manifold. We compute the Picard group of holomorphic line bundles on this loop space as an infinite dimensional complex Lie group with Lie algebra the first Dolbe…