Geodesic
Limit Point Criteria for Differential Equations, II
Canadian journal of mathematics, Tome 26 (1974) no. 2, pp. 340-351

Voir la notice de l'article provenant de la source Cambridge University Press

We consider here singular differential operators, and for convenience the finite singularity is taken to be zero. One operator discussed is the operator L defined by where q 0 > 0 and the coefficients q t are real, locally Lebesgue integrable functions defined on an interval (a, b). For a given positive, continuous weight function h, conditions are given on the functions qi for which the number of linearly independent solutions y of L(y) = λhy (Re λ = 0) satisfying. 
Hinton, Don. Limit Point Criteria for Differential Equations, II. Canadian journal of mathematics, Tome 26 (1974) no. 2, pp. 340-351. doi: 10.4153/CJM-1974-035-7
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