Chernyavskaya, N. and Shuster, L.:
Classification of initial data for the Riccati equation
Bollettino dell'Unione Matematica Italiana Serie 8 5-B (2002), fasc. n.2, p. 511-525, Unione Matematica Italiana (English)
pdf (268 Kb), djvu (182 Kb). | MR1911203 | Zbl 1072.32001
Sunto
Consideriamo un problema di Cauchy $$y'(x)+y^{2}(x)= q(x),\qquad y(x)|_{x=x_{0}}=y_{0}$$ dove $x_{0}$ , $y_{0}\in \mathbb{R}$ e $q(x)\in L_{1}^{\text{loc}}(\mathbb{R})$ è una funzione non negativa che soddisfa la condizione: $$\int_{-\infty}^{x} q(t) \, dt > 0, \quad \int_{x}^{\infty} q(t) \, dt> 0 \qquad \text{ for } x\in \mathbb{R}.$$ Otteniamo le condizioni nelle quali $y(x)$ può essere continuata in tutto $\mathbb{R}$. Questo dipende da $x_{0}$, $y_{0}$ e dalle proprietà di $q(x)$.
Referenze Bibliografiche
[1]
R. BELLMAN-
R. KALABA,
Quasilinearization and Nonlinear Boundary-Value Problems, New York,
1965. |
MR 178571 |
Zbl 0139.10702[2]
N. CHERNYAVSKAYA-
L. SHUSTER,
Estimates for the Green function of a general Sturm-Liouville operator and their applications,
Proc. Amer. Math. Soc.,
127, no. 5 (
1999), 1413-1426. |
MR 1625725 |
Zbl 0918.34032[3]
N. CHERNYAVSKAYA-
L. SHUSTER,
Asymptotics on the diagonal of the Green function of a Sturm-Louiville operator and its applications,
J. London Math. Soc.,
61 (2) (
2000), 506-530. |
MR 1760676 |
Zbl 0959.34019[4]
N. CHERNYAVSKAYA-
L. SHUSTER,
On the WKB-method,
Different. Uravnenija 25, 10 (
1989), 1826-1829. |
MR 1025660 |
Zbl 0702.34053[5]
N. CHERNYAVSKAYA-
L. SHUSTER,
Estimates for Green's function of the Sturm-Liouville operator,
J. Diff. Eq.,
111 (
1994), 410-421. |
MR 1284420 |
Zbl 0852.34023[6]
N. CHERNYAVSKAYA-
L. SHUSTER,
Weight summability of solutions of the Sturm-Liouville equation,
J. Diff. Eq.,
151, 456-473,
1999 preprint AMSPPJ0128-34-003 (1998). |
MR 1669697 |
Zbl 0921.34030[7]
E. B. DAVIES-
E. M. HARRELL,
Conformally flat Riemannian metrics, Schrödinger operators and semiclassical approximation,
J. Diff. Eq.,
66, 2 (
1987), 165-188. |
MR 871993 |
Zbl 0616.34020[8]
E. GOURSAT,
A Course in Mathematical Analysis, Vol. II, Part 2, Differential Equations, New York,
1959. |
Zbl 0144.04501[10]
K. MYNBAEV-
M. OTELBAEV,
Weighted Fuctional Spaces and the Spectrum of Differential Operators,
Nauka, Moscow,
1988. |
MR 950172 |
Zbl 0651.46037[11]
W. A. STEKLOV,
Sur une méthode nouvelle pour résoudre plusiers problèmes sur le développement d'une fonction arbitraire en séries infinies,
Comptes Rendus, Paris,
144 (
1907), 1329-1332. |
Jbk 38.0437.02