Computation programs and log files for the paper "Automorphism groups of superspecial curves of genus 4 over F11"
To prove Propositions 4.3.1 -- 4.3.4, we did the following computation: For each $F_{11}$-isomorphism class (resp. $\overline{F_{11}}$-isomorphism class) of nonhyperelliptic superspecial curves of genus 4 over $F_{11}$, compute its automorphism group over $F_{11}$ (resp. $\overline{F_{11}}$). Each automorphism is computed as an element of the general linear group of degree 4 over $F_{11}$ (resp. $\overline{F_{11}}$). For our algorithm, see Section 3.1 in our paper. In the following, we show our computation programs implemented over Magma V2-22.3, and log files. (EV) OS: Windows 10, 64bit, CPU: intel Core i5, 2.60GHZ, 8GB memory.
Codes and log files(uploaded at September 11th, 2017)
"ZeroDimensionalIdealVariety.txt" (txt): Code for solving zero-dimensional multivariate systems (Algorithm 2.3.1)
Automorphism groups over the prime field $K = F_{11}$ (Propositions 4.3.1 -- 4.3.3)
(N1): Q = 2xw + 2yzCode file "AutPrime-N1.txt" (txt): Code for computing matrices representing automorphisms over $F_{11}$ of each $F_{11}$-isomorphism class
Log file "result_AutPrime-N1.txt" (txt): Log file obtained by executing "AutPrime-N1.txt"
List "List_of_Matrices_AutPrime-N1.txt" (txt): List of matrices obtained by executing "AutPrime-N1.txt", see also the log file
Code file "Group_Structure_AutPrime-N1.txt" (txt): Code for determining the finite group structure of each automorphism group over the prime field $F_{11}$
Log file "result_Group_Structure_AutPrime-N1.txt" (txt): Log file obtained by executing "Group_Structure_AutPrime-N1.txt"
(N2): Q = 2xw + y^2 - (epsilon)z^2
Code file "AutPrime-N2.txt" (txt): Code for computing matrices representing automorphisms over $F_{11}$ of each $F_{11}$-isomorphism class
Log file "result_AutPrime-N2.txt" (txt): Log file obtained by executing "AutPrime-N2.txt"
List "List_of_Matrices_AutPrime-N2.txt" (txt): List of matrices obtained by executing "AutPrime-N2.txt", see also the log file
Code file "Group_Structure_AutPrime-N2.txt" (txt): Code for determining the finite group structure of each automorphism group over the prime field $F_{11}$
Log file "result_Group_Structure_AutPrime-N2.txt" (txt): Log file obtained by executing "Group_Structure_AutPrime-N2.txt"
(Dege): Q = z^2 + 2yw
Code file "AutPrime-Dege.txt" (txt): Code for computing matrices representing automorphisms over $F_{11}$ of each $F_{11}$-isomorphism class
Log file "result_AutPrime-Dege.txt" (txt): Log file obtained by executing "AutPrime-Dege.txt"
List "List_of_Matrices_AutPrime-Dege.txt" (txt): List of matrices obtained by executing "AutPrime-Dege.txt", see also the log file
Code file "Group_Structure_AutPrime-Dege.txt" (txt): Code for determining the finite group structure of each automorphism group over the prime field $F_{11}$
Log file "result_Group_Structure_AutPrime-Dege.txt" (txt): Log file obtained by executing "Group_Structure_AutPrime-Dege.txt"
Automorphism groups over the algebraic closure (Proposition 4.3.4)
N1 type:Code file "AutAC-N1.txt" (txt): Code for computing matrices representing automorphisms over $\overline{F_{11}}$ of each $\overline{F_{11}}$-isomorphism class
Log file "result_AutAC-N1.txt" (txt): Log file obtained by executing "AutAC-N1.txt"
List "List_of_Matrices_AutAC-N1.txt" (txt): List of matrices obtained by executing "AutAC-N1.txt", see also the log file
Code file "Group_Structure_AutAC-N1.txt" (txt): Code for determining the finite group structure of each automorphism group over the algebraic closure $\overline{F_{11}}$
Log file "result_Group_Structure_AutAC-N1.txt" (txt): Log file obtained by executing "Group_Structure_AutAC-N1.txt"
Dege type: Q = z^2 + 2yw
Code file "AutAC-Dege.txt" (txt): Code for computing matrices representing automorphisms over $\overline{F_{11}}$ of each $\overline{F_{11}}$-isomorphism class
Log file "result_AutAC-Dege.txt" (txt): Log file obtained by executing "AutAC-Dege.txt"
List "List_of_Matrices_AutAC-Dege.txt" (txt): List of matrices obtained by executing "AutAC-Dege.txt", see also the log file
Code file "Group_Structure_AutAC-Dege.txt" (txt): Code for determining the finite group structure of each automorphism group over the algebraic closure $\overline{F_{11}}$
Log file "result_Group_Structure_AutAC-Dege.txt" (txt): Log file obtained by executing "Group_Structure_AutAC-Dege.txt"
Other computations
The following are our computation programs (over Magma V2-22.3) in Section 5 of our paper.