Geodesic
Eventual Disconjugacy and Right Disfocality of Linear Difference Equations
Canadian mathematical bulletin, Tome 31 (1988) no. 3, pp. 362-373

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Let a ≧ 0, Ia = {a, a + 1, ...} and consider the nth order linear difference m ∈ Ia, α0(m) = 1 on Ia. Summability conditions are placed on the coefficients αj(m), 1 ≦ j ≦ n, such that the equation Pu(m) = 0 is eventually disconjugate. Conditions for eventual right disfocality are also given.
DOI : 10.4153/CMB-1988-052-6
Mots-clés : 39A10 
Eventual Disconjugacy and Right Disfocality of Linear Difference Equations. Canadian mathematical bulletin, Tome 31 (1988) no. 3, pp. 362-373. doi: 10.4153/CMB-1988-052-6
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