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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Geometric Isomorphisms between Infinite Dimensional Teichmüller Spaces
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by Clifford J. Earle and Frederick P. Gardiner PDF
Trans. Amer. Math. Soc. 348 (1996), 1163-1190 Request permission


Let $X$ and $Y$ be the interiors of bordered Riemann surfaces with finitely generated fundamental groups and nonempty borders. We prove that every holomorphic isomorphism of the Teichmüller space of $X$ onto the Teichmüller space of $Y$ is induced by a quasiconformal homeomorphism of $X$ onto $Y$. These Teichmüller spaces are not finite dimensional and their groups of holomorphic automorphisms do not act properly discontinuously, so the proof presents difficulties not present in the classical case. To overcome them we study weak continuity properties of isometries of the tangent spaces to Teichmüller space and special properties of Teichmüller disks.
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Additional Information
  • Clifford J. Earle
  • Affiliation: Department of Mathematics, Cornell University, Ithaca, New York 14853
  • Email:
  • Frederick P. Gardiner
  • Affiliation: Department of Mathematics, Brooklyn College, City University of New York, Brooklyn, New York 11210
  • MR Author ID: 198854
  • Email:
  • Received by editor(s): March 15, 1995
  • Additional Notes: Research of the first author was partly supported by NSF Grant DMS 9206924 and by a grant from MSRI; of the second, by NSF Grant DMS 9204069.
  • © Copyright 1996 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 348 (1996), 1163-1190
  • MSC (1991): Primary 32G15; Secondary 30C62, 30C75
  • DOI:
  • MathSciNet review: 1322950