activity
20172026
most citedGlobal solution for a coupled parabolic system with degenerate coefficients and time-weighted sources

1 citations · 2 across the 5 of their papers we have counts for

collaborators

7 papers

math.AP2026

Global and nonglobal solutions for an abstract semilinear heat equation

Ricardo Castillo, Ricardo Freire, Miguel Loayza

In this paper, we focus on the existence of both global and non-global nonnegative solutions for the abstract semilinear heat equation in…

math.AP2025

Global and nonglobal solutions for a mixed local-nonlocal heat equation

Brandon Carhuas, Ricardo Castillo, Ricardo Freire +2

In this work, we establish optimal conditions concerning the global and nonglobal existence of solutions of a semilinear parabolic equations governed by a mixed local-nonlocal oper…

math.AP2025

Blow-up and global mild solutions for a Hardy-Hénon parabolic equation on the Heisenberg group

Ricardo Castillo, Ricardo Freire, Miguel Loayza

We are concerned with the existence of global and blow-up solutions for the nonlinear parabolic problem described by the Hardy-Hénon equation $u_t - Δ_{\mathbb{H}} u = |\cdot|_{\ma…

math.AP2022★ 1 cited

Global solution for a coupled parabolic system with degenerate coefficients and time-weighted sources

Ricardo Castillo, Omar Guzmán-Rea, Miguel Loayza +1

In this paper, we obtain the so-called Fujita exponent to the following parabolic system with time-weighted sources and degenerate coefficients $ u_{t}- \mbox{div} ( ω(x)\nabla { u…

math.AP2022★ 1 cited

on a second critical value for the local existence of solutions in lebesgue spaces

Brandon Carhuas-Torre, Ricardo Castillo, Miguel Loayza

We provide new conditions for the local existence of solutions to the time-weighted parabolic equation $ u_t - Δu = h(t)f(u) \mbox{ in } Ω\times (0,T),$ where is a arbitrary s…

math.AP2022

Existence and non-existence of global solutions for a heat equation with degenerate coefficients

Ricardo Castillo, Omar Guzmán-Rea, María Zegarra

In this paper, we will study the following parabolic problem with non-negative initial conditions pertaining to $C_b(\mathbb{R}^N)…

math.AP2017

Interior Sobolev regularity for fully nonlinear parabolic equations

Ricardo Castillo, Edgard A. Pimentel

In the present paper, we establish sharp Sobolev estimates for solutions of fully nonlinear parabolic equations, under minimal, asymptotic, assumptions on the governing operator. I…