Geodesic
Cosine families of unbounded normal operators
Annales Polonici Mathematici, Tome 50 (1989) no. 2, pp. 191-208.

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

DOI : 10.4064/ap-50-2-191-208

Jan Niechwiej 1

1 
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     title = {Cosine families of unbounded normal operators},
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Jan Niechwiej. Cosine families of unbounded normal operators. Annales Polonici Mathematici, Tome 50 (1989) no. 2, pp. 191-208. doi : 10.4064/ap-50-2-191-208. http://geodesic.mathdoc.fr/articles/10.4064/ap-50-2-191-208/

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