On a Functional Equation Arising from Subcontrary Mean and Its Pertinences

  • B. V. Senthil KumarEmail author
  • Hemen Dutta
  • Khalifa Al-Shaqsi
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1111)


Modelling equations involving functions is a powerful tool in many physical problems which do not require derivatives of function. The study of solution, stability and application of functional equations is an emerging field in the present scenario of research in abstract and applied mathematics. The purpose of this study is to deal with a new functional equation arising from subcontrary mean (harmonic mean) and its various fundamental stabilities relevant to Ulam’s ideology of stability and also its pertinences in different fields such as physics, finance, geometry and in other sciences. We illustrate a numerical example to relate the equation dealt in this study with the fuel economy in automobiles.


Arithmetic mean Harmonic mean Functional equation Ulam stability 

2010 Mathematics Subject Classication:

39B82 39B72 



The first and third authors are supported by The Research Council, Oman (Under Project proposal ID: BFP/RGP/CBS/18/099).


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • B. V. Senthil Kumar
    • 1
    Email author
  • Hemen Dutta
    • 2
  • Khalifa Al-Shaqsi
    • 1
  1. 1.Department of Information TechnologyNizwa College of TechnologyNizwaOman
  2. 2.Department of MathematicsGauhati UniversityGuwahatiIndia

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