This is a preview of subscription content, log in via an institution to check access.
References
Agmon, S., Douglis, A., Nirenberg, L.: Estimates near the boundary for solutions of elliptic partial differential equations satisfying general boundary conditions II. Commun. Pure Appl. Math.17, 35–92 (1964)
Bourgain, J.: Some remarks on Banach spaces in which martingale difference sequences are unconditional. Ark. Mat.21, 163–168 (1983)
Burkholder, D.L.: A geometrical characterization of Banach spaces in which martingale difference sequences are unconditional. Ann. Probab.9, 997–1011 (1981)
Burkholder, D.L.: A geometric condition that implies the existence of certain singular intergrals of Banach-space-valued functions. In: Conference on harmonic analysis in honor of Antoni Zygmund (Chicago 1981), pp. 270–286. Belmont: Wadsworth 1983
Burkholder, D.L.: Martingales and Fourier analysis in Banach spaces. In: Probability and analysis (Varenna 1985), pp. 61–108; Lect. Notes Math. 1206. Berlin Heidelberg New York: Springer 1986
Ciorănescu, I., Zsidó, L.: Analytic generators for one-parameter groups. Tôhoku Math. J. II Ser.28, 327–362 (1976)
Cobos, F.: Some spaces in which martingale difference sequences are unconditional. Bull. Pol. Acad. Sci., Math.34, 695–703 (1986)
Da Prato, G., Grisvard, P.: Sommes d'opérateurs linéaires et équations différentielles opérationnelles J. Math. Pures Appl., IX Ser.54, 305–387 (1975)
Dunford, N., Schwartz, J.T.: Linear operators, Part I. New York: Interscience 1958
Marschall, E.: On the analytical generator of a group of operators. Indiana Univ. Math. J.35, 289–309 (1986)
McConnell, T.R.: On Fourier multiplier transformations of Banach-valued functions. Trans. Am. Math. Soc.285, 739–757 (1984)
Peetre, J.: Sur la transformation de Fourier des fonctions à valeurs vectorielles. Rend. Sem. Mat. Univ. Padova.42, 15–26 (1969)
Rubio de Francia, J.L.: Martingale and integral transforms of Banach space valued functions. In: Probability and Banach spaces (Proceedings, Zaragoza 1985), pp. 195–222; Lect. Notes Math.1221. Berlin Heidelberg New York: Springer 1986
Seeley, R.: Norms and domains of the complex powersA rB . Am. J. Math.93, 299–309 (1971)
Triebel, H.: Interpolation theory, function spaces, differential operators. Amsterdam, New York, Oxford: North Holland 1978
von Wahl, W.: The equationú+A(t)u=f in a Hilbert space andL p-estimates for parabolic equations. J. Lond. Math. Soc., II Ser.25, 483–497 (1982)
Yagi, A.: Coincidence entre des espaces d'interpolations et des domains de puissances fractionnaires d'opérateurs J.R. Acad. Sci. Paris, Ser I299, 173–176 (1984).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dore, G., Venni, A. On the closedness of the sum of two closed operators. Math Z 196, 189–201 (1987). https://doi.org/10.1007/BF01163654
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01163654