References
M. Abramowitz and I. A. Stegun, eds., “Handbook of Mathematical Functions”, Dover, 1965.
G. Birkhoff, “Uniformly semi-primitive multiplicative processes”,Trans. Am. Math. Soc,104 (1962), 37–51.
G. Birkhoff, “Uniformly semi-primitive multiplicative processes. II.”J. Math. Mech. 14 (1965), 507–512.
G. Birkhoff and L. Kotin, Essentially positive systems of linear differential equationsBull. Am. Math. Soc,71 (1965), 771–772.
G. Birkhoff and R. S. Varga, “Reactor criticality and nonnegative matrices”,J. Soc. Ind. Appl. Math. 6 (1958), 354–377.
P. M. Morse and H. Feschbach, “Methods of Theoretical Physics”, vol.I, McGraw-Hill, 1953.
E. T. Whittaker and G. N. Watson, “A Course in Modern Analysis”, Macmillan, 1946.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Birkhoff, G., Kotin, L. Linear second-order differential equations of positive type. J. Anal. Math. 18, 43–52 (1967). https://doi.org/10.1007/BF02798033
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02798033