[1]
G.R. Allan, A spectral theory for locally convex algebras, Proc. London Math. Soc. (3) 15 (1965), pp.399-421.
Google Scholar
[2]
F. G. Bonales, R. V. Mendoza, A formula to calculate the spectral radius of a compact linear operator, Internat. J. Math. Sci., 20, (3), (1997), pp.585-588.
DOI: 10.1155/s0161171297000793
Google Scholar
[3]
G. Da Prato, E. Giusti, Una caratterizzazione dei generatori di funzioni coseno astratte, Bull. Un. Mat. Italiana, 22 (1967), pp.357-362.
Google Scholar
[4]
Da Prato, Semigruppi periodici, Ann. Mat. Pura. Appl., 78 (1968), pp.55-67.
DOI: 10.1007/bf02415109
Google Scholar
[5]
D. Van Dulst, Barreledness of subspaces of countable co-dimension and the closed graph theorem, Compositio Mathematica, 24 , (2), (1972), pp.227-234.
Google Scholar
[6]
N. Dunford, Spectral theory I. Convergence to projection, Trans. Amer. Math. Soc. 54 (1943), pp.185-217.
Google Scholar
[7]
N. Dunford, J.T. Schwartz, Linear Operators I: General theory, Pure and Appl. Math., vol. 7, Interscience Publishers, Inc., New-York (1958).
Google Scholar
[8]
H.O. Fattorini, Ordinary differential equations in linear topological spaces, II., J. Diff. Eq. 6(1969), pp.50-70.
DOI: 10.1016/0022-0396(69)90117-x
Google Scholar
[9]
E. Giusti, Funzioni coseno periodiche, Bull. Un. Math. Ital., 22 (1967), pp.478-485 (1) (2) (3) (4) (5) (6).
Google Scholar
[10]
T. Husain, The open mapping and closed graph theorems in toplogical vector spaces, Oxford Mathematical Monographs, (1965).
DOI: 10.1007/978-3-322-96210-2_3
Google Scholar
[11]
G.A. Joseph, Boundedness and completeness in locally convex spaces and algebras, J. Austral. Math. Soc. 24 (Series A) (1977).
Google Scholar
[12]
E. Kramar, Invariant subspaces for some operators on locally convex spaces, Comment. Math. Univ. Carolinae 38, 3 (1997), pp.635-644.
Google Scholar
[13]
J. Karol, W. Sliwa, M. Wojtowicz, Cs-barreled spaces, Collect. Math. 45, 3 (1994), pp.271-276.
Google Scholar
[14]
S. Kurepa, On some functional equations in Banach spaces, Studia Math., 19 (1960) pp.149-158.
DOI: 10.4064/sm-19-2-149-158
Google Scholar
[15]
R. Larsen, An introduction to the theory of multipliers, Springer, Berlin, (1971).
Google Scholar
[16]
M. Lin, On the uniform ergodic theorem, Proc. Amer. Math. Soc. 43 (2) (1974), pp.337-340.
DOI: 10.1090/s0002-9939-1974-0417821-6
Google Scholar
[17]
A. Michael, Locally multiplicatively convex topological algebras, Mem. Amer. Math. Soc., 11, (1952).
Google Scholar
[18]
R.T. Moore, Banach algebras of operators on locally convex spaces, Bull. Am. Math. Soc. 75 (1969), pp.69-73.
DOI: 10.1090/s0002-9904-1969-12147-6
Google Scholar
[19]
B. Nagy, On some functional equations in Banach algebras, Publ. Math., Tom 24, Fasc. 3-4(1977), pp.257-261.
DOI: 10.5486/pmd.1977.24.3-4.06
Google Scholar
[20]
V. Ptak, Completeness and the open mapping theorem, Bulletin de la S.M.F., tome 86 (1958), pp.41-74.
Google Scholar
[21]
M. Sova, Cosine operator functions, Rozprawy Mat., XLIX (1966), pp.3-47.
Google Scholar
[22]
E. B van Vleck, A functional equation for the sine, Ann Math. 11(1910), pp.161-165.
Google Scholar
[23]
M. Watanabe, A perturbation theory for abstract evolution equations of second order, Proc. Jap. Acad., 58, Ser. A (1982), pp.143-146.
Google Scholar
[24]
M. Watanabe, A new proof of the generation theorem of cosine families in Banach spaces, Houston J. of Math., vol. 10, nr. 2, (1984), pp.285-290.
Google Scholar