activity
20242026
collaborators

5 papers

math.PR2026

Extinction and Survival in an Interval-Activation Frog Model on \mathbb{Z} with Random Survival Parameters and Symmetric Random Walks

Gustavo Oshiro de Carvalho, Fábio Prates Machado, José Hermenegildo Ramírez-González

We study an interval-activation frog model on \(\mathbb Z\) with i.i.d.\ initial numbers of frogs \((η_x)_{x\in\mathbb Z}\), satisfying \(0<\mathbb{E}[η_0]<\infty\). Frogs at the o…

math.PR2026

The Frog Model on with Discrete Weibull Lifetimes and Random Parameter

J. H. Ramírez González, Gustavo O. Carvalho, Fábio P. Machado

We study the frog model on with particle wise discrete Weibull lifetimes. Each particle has an i.i.d. survival parameter ; conditionally on , its lifet…

math.PR2025

The Frog Model on with General Random Survival Parameter

Gustavo O. Carvalho, Fábio P. Machado, J. Hermenegildo R. González

We study the frog model on with particle-wise random geometric lifetimes: each particle has a survival parameter sampled i.i.d., whose density near sat…

math.PR2025

Frog model on with random survival parameter

Gustavo O. de Carvalho, Fábio P. Machado

We study the frog model on \( \mathbb{Z} \) with geometric lifetimes, introducing a random survival parameter. Active and inactive particles are placed at the vertices of \( \mathb…

math.PR2024

Critical Conditions for the Coverage of Complete Graphs with the Frog Model

Gustavo O. de Carvalho, Fábio P. Machado

We consider a system of interacting random walks known as the frog model. Let be the complete graph with vertices and $o\in\mathca…