Abstract
The theory of diffusion processes with a nonnormable phase space (a nuclear Fréchet space) is developed and the Cauchy problem for parabolic equations relative to functions on this space is solved by probabilistic methods. A series of examples are given, demonstrating a significant difference between the theory of stochastic differential equations and parabolic equations in the case of locally convex spaces, on one hand, and the analogous theory in the case of Banach spaces, on the other hand. The difficulty which arises, when passing from a Banach space to a Fréchet space, involves basically a functional rather than a probabilistic character. There appears a sufficiently complex intertwinement of the theory of locally convex and pseudotopological spaces with probability theory.
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Literature cited
Yu. L. Daletski, “Infinite-dimensional elliptic operators and related parabolic equations,” Usp. Mat. Nauk,22, No. 4 (136), 3–52 (1967).
H.-H. Kuo and M. A. Piech, “Stochastic integrals and parabolic equation in abstract Wiener space,” Bull. Am. Math. Soc.,79, No. 2, 478–482 (1973).
E. T. Shavgulidze, “On the direct equation of Kolmogorov for measures in a Hilbert scale of spaces,” Vestn. Mosk. Univ., Ser. I Mat. Mekh., No. 3, 19–28 (1978).
Ya. I. Belopolskaya and Yu. L. Daletskii, “Diffusion processes in smooth Banach spaces and manifolds. I,” Tr. Mosk. Mat. Obshch.,37, 107–141 (1978).
M. I. Vishik and A. I. Komech, “On the Navier-Stokes stochastic system and corresponding Kolmogorov equations,” Dokl. Akad. Nauk SSSR,257, No. 6, 1298–1301 (1981).
H.-H. Kuo, “On operator-valued stochastic integrals,” Bull. Am. Math. Soc.,79, No. 1, 207–210 (1973).
M. Metivier, “Integrale stochastique par rapport a des processus a valeurs dans un espace de Banach reflexif,” Teor. Veroyatn. Primen.,19, No. 1, 787–816 (1974).
M. Yor, “Sur les integrals stochastiques a valeurs dans une espace de Banach,” Ann. Inst. H. Poincare,”10, No. 1, 31–36 (1974).
N. V. Krylov and B. L. Rozovskii, “Ito equations in Banach spaces and strongly parabolic stochastic partial differential equations,” Dokl. Akad. Nauk SSSR,249, No. 2, 285–289 (1979).
A. V. Skorokhod, Random Linear Operators [in Russian], Naukova Dumka, Kiev (1978).
V. V. Sazonov and V. N. Tutubalin, “Probability distributions on topological groups,” Teor. Veroyatn. Primen.,11, No. 1, 3–55 (1966).
V. V. Buldygin, The Convergence of Random Elements in Topological Spaces [in Russian], Naukova Dumka, Kiev (1980).
I. Mitoma, “Martingales of random distributions,” Mem. Fac. Sci. Kyushu Univ., Ser. A,35, No. 1, 185–203 (1981).
A. Yu. Khrennikov, “Stochastic integrals in locally convex spaces,” Usp Mat. Nauk,37, No. 1, 161–162 (1982).
O. G. Smolyanov, Analysis on Linear Topological Spaces and Its Applications [in Russian], Moscow State Univ. (1979).
H. H. Schaefer, Topological Vector Spaces, MacMillan, New York (1966).
L. Gross, “Abstract Wiener spaces,” in: Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability (Univ. California, 1965–1966), Vol. II, Part 1, Univ. California Press, Berkeley (1967), pp. 31–42.
H.-H. Kuo, Gaussian Measures in Banach Spaces, Lect. Notes Math., No. 463, Springer, Berlin (1975).
H. Sato, “Gaussian measure on a Banach space and abstract Wiener measure, Nagoya Math. J.,36, 65–94 (1969).
N. N. Vakhaniya and V. I. Tarieladze, “Covariance operators of probability measures in locally convex spaces,” Teor. Veroyatn. Primen.,23, No. 1, 3–26, (1978).
H. H. Keller, Differential Calculus in Locally Convex Spaces, Lecture Notes in Math., No. 417, Springer, Berlin (1974).
M. Sova, “Conditions of differentiability in linear topological spaces,” Czechoslovak Math. J.,16, No. 3, 339–362 (1966).
A. Pietsch, Nuclear Locally Convex Spaces, Springer, New York (1972).
G. E. Shilov, Mathematical Analysis: Second Special Course [in Russian], Nauka, Moscow (1965).
I. I. Gikhman and A. V. Skorokhod, Introduction to the Theory of Random Processes, 2nd ed. [in Russian], Nauka, Moscow (1977).
K. Yosida, Functional Analysis, Springer, Berlin (1965).
V. I. Averbukh and O. G. Smolyanov, “Various definitions of the derivative in linear topological spaces,” Usp. Mat. Nauk,23, No. 4 (142), 67–116 (1968).
Ya. I. Belopolskaya and Yu. L. Daletskii, “Ito equations and differential geometry,” Usp. Mat. Nauk,37, No. 3, 95–142 (1982).
Yu. L. Daletskii and S. V. Fomin, “Generalized measures in Hilbert space and the direct Kolmogorov equation,” Dokl. Akad. Nauk SSSR,205, No. 4, 759–762 (1972).
O. G. Smolyanov, “A certain method of proving uniqueness theorems for evolution differential equations,” Mat. Zametki,25, No. 2, 259–269 (1979).
A. Friedman, Partial Differential Equations of Parabolic Type, Prentice-Hall, Englewood Cliffs (1964).
A. Pietsch, Operator Ideals, North-Holland, Amsterdam (1980).
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Translated from Trudy Seminara imeni I. G. Petrovskogo, No. 11, pp. 190–209, 1986.
In conclusion, the author expresses his gratitude to O. G. Smolyanov for his constant interest in the paper and for useful advice.
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Khrennikov, A.Y. Diffusion processes in linear spaces and pseudotopologies. J Math Sci 45, 1523–1540 (1989). https://doi.org/10.1007/BF01097276
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DOI: https://doi.org/10.1007/BF01097276