Survey of research over the past fifty years in stochastic mathematics (S.M.) exploring interdisciplinary frontiers
Abstract
This article provides an overview of the explorations over the past fifty years or more, as indicated in the title. The main new areas explored are the first three terms below. The fourth item is a related exploration result. The interaction of stochastic mathematics (S.M.) and statistical physics opens up new frontiers. Interaction of S.M. with other branches of mathematics: a nearly new theory for various stability and its speed estimation. Interaction of S.M. and economy: the first precise theory of economic optimization. Optimization method in deep mathematical research. It is hoped that these experiences would be helpful to future generations.
Copyright (c) 2026 Mu-Fa Chen

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References
[1]Loève M. Probability Theory, 3rd ed. Van Nostrand; 1963.
[2]Yan S, Wang J, Liu X. Fundamentals of Probability Theory. Science Press; 1982.
[3]Hou Z. Criteria for Uniqueness of Q Processes. Hunan Science and Technology Press; 1982. (in Chinese)
[4]Chung KL. Markov Chains with Stationary Probabilities. Springer; 1967.
[5]Qian M, Hou Z, Chen MF, et al. Reversible Markov Process. Hunan Science and Technology Press; 1979. (in Chinese)
[6]Chen MF. From Markov Chains to Non-Equilibrium Particle Systems, 2nd ed. World Scientific Pub Co Inc; 2004.
[7]Preston C. Random Fields. Springer; 1976.
[8]Liggett TM. The stochastic evolution of infinite systems of interacting particles. In: Hennequin PL (editor). Ecole d’Eté de Probabilités de Saint-Flour VI-1976. Springer; 1977.
[9]Chen MF. Infinite dimensional reaction-diffusion processes. Acta Mathematica Sinica, English Series. 1985; l(3): 261.
[10]Durrett R. Ten Lectures on Particle Systems. In: Bernard P (editor). Lectures on Probability Theory. Springer; 1995. pp. 97–201.
[11]Chen MF. Eigenvalues, Inequalities, and Ergodic Theory. Springer; 2005.
[12]Chen MF, Wang FY. Estimation of the first eigenvalue of second order elliptic operators. Journal of Functional Analysis. 1995; 131(2): 345–363.
[13]Berestycki H, Nirenberg L, Varadhan S. The principal eigenvalue and maximum principle for second-order elliptic operators in general domains. Communications on Pure and Applied Mathematics. 1994; 47(1): 47–92.
[14]Chen MF, Wang FY. General formula for lower bound of the first eigenvalue on Riemannian manifolds. Science in China Series A: Mathematics. 1997; 40(4): 384–394.
[15]Chen MF. Spectral gap and logarithmic Sobolev constant for continuous spin systems. Acta Mathematica Sinica, English Series. 2008; 24(5): 705–736.
[16]Hua L. For Young Mathematicians. China Youth Publishing House; 1956.



