A note on the conjecture of the autotopism group of the Figueroa’s presemifields

Autores

  • Walter J. Meléndez Florián Facultad de Ciencias Físicas y Matemáticas, Universidad Nacional de Trujillo, Avenida Juan Pablo II s/n, Trujillo, Perú. , Facultad de Ciencias Físicas y Matemáticas, Universidad Nacional de Trujillo, Avenida Juan Pablo II s/n, Trujillo, Perú. http://orcid.org/0000-0002-6253-0205 (não autenticado)
  • Moisés R. Delgado Olórtegui Mathematics and Physics Department, University of Puerto Rico, Cayey Campus, 205 Calle Antonio R. Barceló, Cayey, Puerto Rico. , Mathematics and Physics Department, University of Puerto Rico, Cayey Campus, 205 Calle Antonio R. Barceló, Cayey, Puerto Rico. http://orcid.org/0000-0002-5267-8169 (não autenticado)

DOI:

https://doi.org/10.17268/sel.mat.2020.02.09

Palavras-chave:

Finite presemifield, finite semifield, autotopism group, Cordero-Figueroa semifield, Figueroa’s presemifield

Resumo

In [4] was stated the following conjecture: If a Figueroa’s presemifield P(K; alfa; beta; A;B) admits an autotopism of order a p-primitive prime divisor of p^n-1, then its autotopism group is isomorphic to a subgroup of GL(K) x GL(K). In [5] this conjecture was settled under an additional normality condition. In this article, we show that the assumption in the hypothesis of the conjecture is necessary in the sense that there exist a Figueroa’s presemifield, that does not admit such autotopism, for which the conjecture is not met.

Biografia do Autor

  • Walter J. Meléndez Florián, Facultad de Ciencias Físicas y Matemáticas, Universidad Nacional de Trujillo, Avenida Juan Pablo II s/n, Trujillo, Perú., Facultad de Ciencias Físicas y Matemáticas, Universidad Nacional de Trujillo, Avenida Juan Pablo II s/n, Trujillo, Perú.

    Departamento de Matemáticas

    Profesor Auxiliar

  • Moisés R. Delgado Olórtegui, Mathematics and Physics Department, University of Puerto Rico, Cayey Campus, 205 Calle Antonio R. Barceló, Cayey, Puerto Rico., Mathematics and Physics Department, University of Puerto Rico, Cayey Campus, 205 Calle Antonio R. Barceló, Cayey, Puerto Rico.

    Mathematics and Physics Deparment

    Assistant Professor

Referências

Cordero M, Figueroa R. Towards a characterization of the generalized twisted field planes. J. Geom. 1995; 52(1-2):54-63.

Dempwolff U. Semifields Planes of Order 81. J. Geom. 2008; 89(1-2):1-16.

Hughes D, Piper F. Projective Planes. New York: Springer-Verlag; 1973.

Meléndez W, Figueroa R, Delgado M. On the autotopism group of the Cordero-Figueroa semifield of order 36. Discuss. Math.-General Algebra and Appl. 2016; 36(1):117-126. doi:10.7151/dmgaa.1250.

Meléndez W, Delgado M. On a conjecture about the autotopism group of the Figueroa’s presemifield of order pn. Note Mat. 2018; 38(2):11-20. doi: 10.1285/i15900932v38n2p11.

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Publicado

2020-12-25

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Articles

Como Citar

A note on the conjecture of the autotopism group of the Figueroa’s presemifields. (2020). Selecciones Matemáticas, 7(02), 267-275. https://doi.org/10.17268/sel.mat.2020.02.09