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一类带非齐次记忆项抛物方程解的整体存在性和爆破

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该文研究一类带非齐次记忆项抛物方程的柯西问题,讨论非线性项和非齐次项对整体解存在性的影响。当非线性项指数增长高于某一值时,利用压缩映射原理,证明了整体解的存在唯一性;当非线性项指数增长低于某一值时,利用测试函数法,证明了解在有限时刻爆破。
Global Existence and Blow-up for a Class of Parabolic Equations with Nonhomogeneous Memory Terms
The purpose of this paper is to study the Cauchy problem for a class of parabolic equations with non-homogeneous memo-ry term.This paper investigates the influence of nonlinear and non-homogeneous terms on the existence of global solutions.When the exponential growth of the nonlinear term is higher than a certain number,the existence and uniqueness of the global solution are proved by using the contraction mapping principle.Using the test function method,this paper proves that the solution blows up in fi-nite time when the exponential growth of the nonlinear term is lower than a certain number.

Cauchy problemcontraction mapping principletest function methodglobal existenceBlow-up

王政慧、祝雪、杨晗

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西南交通大学 数学学院,四川 成都 611756

柯西问题 压缩映射原理 测试函数法 整体解 爆破

国家自然科学基金国家自然科学基金

1170147711971394

2024

山西大学学报(自然科学版)
山西大学

山西大学学报(自然科学版)

CSTPCD北大核心
影响因子:0.287
ISSN:0253-2395
年,卷(期):2024.47(5)