Siberian Mathematical Journal

, Volume 46, Issue 2, pp 205–225 | Cite as

Extrapolation functors on a family of scales generated by the real interpolation method

  • S. V. Astashkin


A new class of extrapolation functors is defined on a family of scales generated by the real interpolation method. We prove extrapolation relations for the K- and J-functionals corresponding to some natural pairs of limit spaces which make it possible to describe the values of these functors. We can consider these relations as new assertions similar to the classical Yano theorem on estimates for the norms of operators in interpolation scales of spaces.


operator extrapolation extrapolation functor rearrangement invariant space operator interpolation real interpolation method 


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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • S. V. Astashkin
    • 1
  1. 1.Samara State UniversitySamara

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