Critical Fujita exponents for a class of quasilinear coupled parabolic  equations

This article concerns the critical Fujita exponents for a class of quasilinear coupled parabolic equations. Using energy estimates, suitable supersolutions, and the comparison principle, the blow-up theorem of Fujita type is established, and the critical Fujita exponent is obtained. Furthermore, we show that the critical case belongs to the blow-up case. For more information see https://ejde.math.txstate.edu/Volumes/2025/21/abstr.html