id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejde-49	Hafstein, Sigurdur Freyr Hafstein	An algorithm for constructing Lyapunov functions	2007	100	.pdf	application/pdf	41571	2267	78	∈ J for all x ∈ I \ C. It is clear from elementary calculus, that if g : I → R is a function from a nonempty open subset I ⊂ R into R and y ∈ I, then all four Dini derivatives D+g(y), D+g(y), D−g(y), and D−g(y) of g at the point y exist.	cache/ejde-49.pdf	txt/ejde-49.txt