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Bibliographic Details
Main Authors: Ito, Tetsushi, Takeuchi, Daichi, Tsushima, Takahiro
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.16729
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Table of Contents:
  • In our previous work, we gave a formula for the Frobenius eigenvalues of van der Geer--van der Vlugt curves in characteristic 2 by considering suitable quotients of the curve. Although the formula is explicit, it depends on many choices, which makes the formula complicated. In this article, we take a different approach using a factorization of additive polynomials, and prove a new formula. The resulting formula is simpler and is useful for explicit computations. As applications, we provide a method for constructing maximal and minimal van der Geer--van der Vlugt curves, and show that every such curve arises from this construction. We also compute various examples of van der Geer--van der Vlugt curves and study their periods.