Existence of Deflagration Waves: Connection to a Degenerate Critical Point

We consider the system of reaction-diffusion equations: (1) p t = ( d 1 ( p , T ) p x ) x − b 1 p e − E / R T T t = ( d 2 ( p , T ) T x ) x = b 2 p e − E / R T https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003072683/4382fcd0-4153-46e7-888a-e0b6b9eb509e/content/eq1022.tif"/>