Differential Inequalities and Existence Theory for Differential, Integral, and Delay Equations

This paper is concerned with simple, concise, and unifying proofs of global existence of solutions for (1) x ′ = f ( t , x ) https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003072140/faeac70b-e389-4ea4-8b5b-5a836c2a1f73/content/eq752.tif"/>