On the non-negativity of Green's functions.
Bellman, Richard
Bollettino dell'Unione Matematica Italiana, Tome 12 (1957), p. 411-413 / Harvested from Biblioteca Digitale Italiana di Matematica
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Publié le : 1957-09-01
@article{BUMI_1957_3_12_3_411_0,
     author = {Richard Bellman},
     title = {On the non-negativity of Green's functions.},
     journal = {Bollettino dell'Unione Matematica Italiana},
     volume = {12},
     year = {1957},
     pages = {411-413},
     zbl = {0085.31202},
     mrnumber = {104860},
     language = {en},
     url = {http://dml.mathdoc.fr/item/BUMI_1957_3_12_3_411_0}
}

Bellman, Richard. On the non-negativity of Green's functions.. Bollettino dell'Unione Matematica Italiana, Tome 12 (1957) pp. 411-413. http://gdmltest.u-ga.fr/item/BUMI_1957_3_12_3_411_0/

[1] Aronszajn, N. and Smith, K. T., A Characterization of Positive Reproducing Kernels, Application to Green's Functions Studies in Eigenvalue Problems, Technical Report 15, U. of Kansas, 1956. | Zbl 0079.13603