Abstract
If n is an odd prime less than 20, then the most symmetric nonsingular plane curves in P 2 of degree n are projectively equivalent to the Fermat curve x n+y n+z n.
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Kaneta, H., Marcugini, S. & Pambianco, F. The Most Symmetric Nonsingular Plane Curves of Degree n≤20, I*. Geometriae Dedicata 85, 317–334 (2001). https://doi.org/10.1023/A:1010362623683
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DOI: https://doi.org/10.1023/A:1010362623683