Cole, Nancy The index theorem for a calculus of variations problem in which the integrand is discontinuous. (English) Zbl 0025.05902 Am. J. Math. 62, 249-276 (1940). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:Variational calculus PDF BibTeX XML Cite \textit{N. Cole}, Am. J. Math. 62, 249--276 (1940; Zbl 0025.05902) Full Text: DOI OpenURL