Ewsey R. Obzherin

collaborators

2 papers

math.OC2026

Decentralized Optimization with Cross-Coupled Mixed Affine Constraints

Ewsey Obzherin, Ilya Khomchenko, Natalia Shelegeda +4

We study decentralized optimization with cross-coupled mixed affine constraints, where local and shared variables interact through two affine channels. We show that the intrinsic d…

math.OC2026

Certified Residual Quasi-Newton Methods for Distributed Variational Inequalities

Ewsey R. Obzherin, Roman M. Mozhaev, Alexander V. Gasnikov +3

Second-order methods for smooth monotone variational inequalities reach the optimal rate $O (T^{- 3/2})$ , but a distributed exact Jacobian costs $d$ times more communication than an…