Polynomial operator matrices as semigroup generators: the 2 x 2 case.
Engel, Klaus-J.
Mathematische Annalen, Tome 283 (1989), p. 563-576 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1989-01-01
EUDML-ID : urn:eudml:doc:164572 
@article{GDZPPN002332884,
     title = {Polynomial operator matrices as semigroup generators: the 2 x 2 case.},
     journal = {Mathematische Annalen},
     volume = {283},
     year = {1989},
     pages = {563-576},
     zbl = {0652.34013},
     url = {http://dml.mathdoc.fr/item/GDZPPN002332884}
}

Engel, Klaus-J. Polynomial operator matrices as semigroup generators: the 2 x 2 case.. Mathematische Annalen, Tome 283 (1989) pp. 563-576. http://gdmltest.u-ga.fr/item/GDZPPN002332884/