activity
20182026
collaborators

8 papers

math.PR2026

Stochastic Jacobi fields along discontinuous martingales on Riemannian submanifolds

Fumiya Okazaki

In this article, we consider discontinuous martingales on tangent bundles over submanifolds of Euclidean space. First, we introduce a connection rule on tangent bundles and establi…

math.OC2026

Topology optimization concerning the mass distribution via filtered gradient flows on the Wasserstein space

Fumiya Okazaki, Takayuki Yamada

In this article, we formulate topology optimization problems concerning the mass distribution as minimization problems for functionals on the Wasserstein space. We relax optimizati…

math.OC2024

On sensitivities regarding shape and topology optimization as derivatives on Wasserstein spaces

Fumiya Okazaki, Takayuki Yamada

In this paper, we apply the framework of optimal transport to the formulation of optimal design problems. By considering the Wasserstein space as a set of design variables, we asso…

math.PR2024

On sequences of martingales with jumps on Riemannian submanifolds

Fumiya Okazaki

In this article, we investigate sequences of discontinuous martingales on submanifolds of higher-dimensional Euclidean space. Those sequences naturally arise when we deal with a se…

math.PR2023

Probabilistic characterization of weakly harmonic maps with respect to non-local Dirichlet forms

Fumiya Okazaki

We characterize weakly harmonic maps with respect to non-local Dirichlet forms by Markov processes and martingales. In particular, we can obtain discontinuous martingales on Rieman…

math.PR2021

Convergence of martingales with jumps on submanifolds of Euclidean spaces and its applications to harmonic maps

Fumiya Okazaki

Martingales with jumps on Riemannian manifolds and harmonic maps with respect to Markov processes are discussed in this paper. Discontinuous martingales on manifolds were introduce…