Cosine families of unbounded normal operators
Annales Polonici Mathematici, Tome 50 (1989) no. 2, pp. 191-208
@article{10_4064_ap_50_2_191_208,
author = {Jan Niechwiej},
title = {Cosine families of unbounded normal operators},
journal = {Annales Polonici Mathematici},
pages = {191--208},
year = {1989},
volume = {50},
number = {2},
doi = {10.4064/ap-50-2-191-208},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-50-2-191-208/}
}
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
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