2-Local isometries between Banach algebras of continuous functions with involution

  • Davood AlimohammadiEmail author
  • Hadis Pazandeh
Original Paper


We give a description of 2-local real isometries between \(C(X,\tau )\) and \(C(Y,\eta )\) where X and Y are compact Hausdorff spaces, X is also first countable and \(\tau \) and \(\eta \) are topological involutions on X and Y, respectively. In particular, we show that every 2-local real isometry T from \(C(X,\tau )\) to \( C(Y,\eta )\) is a surjective real linear isometry whenever X is also separable.


Banach algebra 2-Local real isometry Real linear isometry Topological involution 

Mathematics Subject Classification

47B38 46J10 



The authors would like to thank the referee for his/her valuable comments and suggestions.


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Copyright information

© Tusi Mathematical Research Group (TMRG) 2019

Authors and Affiliations

  1. 1.Department of Mathematics, Faculty of scienceArak UniversityArakIran

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