collaborators

5 papers

q-bio.PE2026

Mathematical Model of Evolution of Non-Degenerate Replicator Systems

Alexander S. Bratus, Sergey Drozhzhin, Tatiana Yakushkina

We propose and analyse a mathematical model of evolutionary adaptation for non-degenerate (permanent) replicator systems, in which the fitness landscape matrix evolves on a slow ti…

q-bio.PE2026

Mathematical Models of Evolution and Replicator Systems Dynamics. Chapter 1: Introduction to Replicator Systems

A. S. Bratus, S. Drozhzhin, T. Yakushkina

This chapter is an overview of foundational results in the mathematical theory of replicator systems. Its primary aim is to provide a unified framework for the mathematical formali…

math.AP2026

The Kolmogorov forward equation for a distributed model of regime-switching diffusions

Alexander S. Bratus, Olga S. Rozanova

For the regime-switching diffusion process with and without advection term we propose an integro-differential equation describing the densities of states continuously distributed o…

q-bio.PE2025

Flow-Based Modelling of Population Dynamics with Consecutive Continuous Mutations

Alexander Bratus, Tatiana Yakushkina, Vladimir Posvyanski

We develop a continuous mathematical model of population dynamics that describes the sequential emergence of new genotypes under limited resources. The framework models genotype de…

q-bio.PE2025

A mathematical framework of consumer-resource dynamics: How to incorporate interactions between interactions in evolutionary process

Alexander S. Bratus, Sergei V. Drozhzhin, Artem S. Novozhilov

A novel mathematical framework is proposed to describe the ecological and evolutionary consequences of consumer--resource interactions. Both the consumer and resource are assumed t…