Kauffman, Robert M. On the limit-n classification of ordinary differential operators with positive coefficients. (English) Zbl 0382.47025 Proc. Lond. Math. Soc., III. Ser. 35, 496-526 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 22 Documents MSC: 47E05 General theory of ordinary differential operators 34A30 Linear ordinary differential equations and systems PDF BibTeX XML Cite \textit{R. M. Kauffman}, Proc. Lond. Math. Soc. (3) 35, 496--526 (1977; Zbl 0382.47025) Full Text: DOI