Journal of Lanzhou University of Technology ›› 2026, Vol. 52 ›› Issue (2): 151-157.

• Scientific • Previous Articles     Next Articles

Blow-up of solutions for the coupled wave equations featuring convolution nonlinearities

QI Ming-ze, MING Sen, HAN Wei   

  1. Department of Mathematics, North University of China, Taiyuan 030051, China
  • Received:2024-09-24 Online:2026-04-28 Published:2026-04-28

Abstract: A class of Cauchy problem for coupled wave equations with convolutional nonlinear terms and scale invariant damping terms in n dimensional space was studied. By constructing the functionals andusing the iterative method, it is demonstrated that solutions to the small initial value problem in the sub-critical and critical cases will blow up at finite time. Furthermore, upper bound estimates for the lifespan of solutions is presented.

Key words: coupled wave equations, nonlinear convolution terms, iteration method, blow-up, lifespan estimates

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