Foundations of Computational Mathematics

, Volume 10, Issue 1, pp 37–66

Linear Precision for Toric Surface Patches

  • Hans-Christian Graf von Bothmer
  • Kristian Ranestad
  • Frank Sottile
Open Access


We classify the homogeneous polynomials in three variables whose toric polar linear system defines a Cremona transformation. This classification includes, as a proper subset, the classification of toric surface patches from geometric modeling which have linear precision. Besides the well-known tensor product patches and Bézier triangles, we identify a family of toric patches with trapezoidal shape, each of which has linear precision. Furthermore, Bézier triangles and tensor product patches are special cases of trapezoidal patches.


Bézier patches Geometric modeling Linear precision Cremona transformation Toric patch 

Mathematics Subject Classification (2000)

14M25 65D17 

Copyright information

© SFoCM 2009

Authors and Affiliations

  • Hans-Christian Graf von Bothmer
    • 1
  • Kristian Ranestad
    • 2
  • Frank Sottile
    • 3
  1. 1.Mathematisches InstitutGeorg-August-Universitiät GöttingenGöttingenGermany
  2. 2.Matematisk InstituttUniversitetet i OsloOsloNorway
  3. 3.Department of MathematicsTexas A&M UniversityCollege StationUSA

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