Analogues of Fermat's extreme value theorem and Cauchy's mean value theorem in commutative algebras

V. Shpakivskyi (Institute of Mathematics of NAS of Ukraine), https://orcid.org/0000-0003-4256-8975

Abstract


In this article, we prove analogues of classical Fermat's extreme value theorem and Cauchy's mean value theorem for functions taking values in commutative algebras.

Keywords


Fermat's extreme value theorem; extreme value; Cauchy's mean value theorem; commutative associative Banach algebra; monogenic function

MSC 2020


30G35; 30G30

Full Text:

PDF

References


Abel U., Ivan M., Riedel T. "The mean value theorem of Flett and divided differences", J. Math. Analys. Applic., 2004; 295(1): pp. 1-9. doi:10.1016/j.jmaa.2003.10.046

Bronshtein I.N., Semendyayev K.A., Musiol G., Muehlig H. Handbook of Mathematics. 5th ed., Springer, 2007. doi:10.1007/978-3-662-46221-8

Ҫakmak D., Tiryaki A. "Mean value theorem for holomorphic functions", El. J. Differ. Equat., 2012; 2012(34): pp. 1-6.

Evard J.-Cl., Jafari F. "A Complex Rolle's Theorem", Amer. Math. Monthly, 1992; 99(9): pp. 858-861. doi:10.1080/00029890.1992.11995942

Fikhtengol'ts G.M. The Fundamentals of Mathematical Analysis. Vol. 1, Pergamon, 1965.

Ievirtz J. "On the mean-value theorem for analytic functions", Michigan Math. J., 1986; 33(3): pp. 365-375. doi:10.1307/mmj/1029003416

Ketchum P.W. "Analytic functions of hypercomplex variables", Trans. Amer. Math. Soc., 1928; 30(4): pp. 641-667. doi:10.1090/S0002-9947-1928-1501452-7

Luc D.T. Theory of Vector Optimization, Lecture Notes in Economics and Mathematical Systems, vol. 319, Springer, 1989. doi:10.1007/978-3-642-50280-4

Luna-Elizarraras M.E., Shapiro M., Shpakivskyi V. "On the Hausdorff Analyticity for Quaternion-Valued Functions", Complex Analys. Oper. Theory, 2019; 13: pp. 2863-2880. doi:10.1007/s11785-018-0856-8

Luna-Elizarraras M.E., Shapiro M., Struppa D.C., Vajiac A. Bicomplex Holomorphic Functions: The Algebra, Geometry and Analysis of Bicomplex Numbers, Frontiers in Mathematics, Birkhäuser, 2015. doi:10.1007/978-3-319-24868-4

Nocedal J., Wright S.J. Numerical Optimization, Springer, 2006.

Pemba J.P., Davied A.R., Muoneke N.K. "A Complexification of Rolle’s Theorem", Applic. Applied Math., 2007; 2(1): pp. 28-31.

Plaksa S.A., Pukhtaievych R.P. "Constructive description of monogenic functions in n-dimensional semi-simple algebra", An. Şt. Univ. Ovidius Constanţa, 2014; 22(1): pp. 221-235. doi:10.2478/auom-2014-0018

Plaksa S.A., Shpakivskyi V.S. Monogenic Functions in Spaces with Commutative Multiplication and Applications, Frontiers in Mathematics, Birkhäuser Cham., 2023. doi:10.1007/978-3-031-32254-9

Qazi M.A. "The mean value theorem and analytic functions of a complex variable", J. Math. Analys. Applic., 2006; 324(1): pp. 30-38. doi:10.1016/j.jmaa.2005.11.049

Roşculeţ M.N. "Algebre infinite asociate la ecuaţii cu derivate parţiale, omogene, cu coeficienţi constanţi de ordin oarecare", Stud. Cercetări Matem., 1955; 6(3-4): pp. 567-643. (in Romanian)

Roşculeţ M.N. Funcţii monogene pe algebre comutative, Edit. Academ. Republ. Social. România, 1975. (in Romanian)

Sahoo P.K., Riedel T. Mean value theorems and functional equations, World Scientific, 1998.

Samoilenko A.M. "Generalized mean-value theorem for an analytic function and an algorithm for the evaluation of the function of mean values", Ukrainian Math. J., 2017; 69(6): pp. 892-915. doi:10.1007/s11253-017-1403-x

Savchuk V.V. "On the mean-value theorem for analytic functions", Ukrainian Math. J., 1997; 49(8): pp. 1286-1291. doi:10.1007/BF02487554

Száz A. "A Cauchy's mean value theorem for complex functions", Math. Student, 1995; 64: pp. 125-127.

Trokhimchuk Yu.Yu. "Mean value theorem", Ukrainian Math. J., 2014; 65(9): pp. 1418-1425. doi:10.1007/s11253-014-0869-z




DOI: https://doi.org/10.15421/242611

  

Refbacks

  • There are currently no refbacks.


Copyright (c) 2026 V. Shpakivskyi

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Registered in

More►


ISSN (Online): 2664-5009
ISSN (Print): 2664-4991
DNU