ex.24.7.1.55_79_103.b
Base Field
\(F = \mathbb{Q}_2\)
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Description
exceptional, SL(2,3)
Construction
Extension to \(I_F\) of \(
\tau = \operatorname{Ind}^{I_K}_{I_L} \chi
\), with \(L, K\) and \(\chi\) as below
Semistability defect
\( e = 24\)
Conductor exponent
\( v(N) = 7\)
Character Order
4
Triply Field
The inertial type \(\tau\) becomes an induction (triply imprimitive) over:
\( L = F(\mu_3, b) \), with \(\mu_3\) a root of \(x^2+x+1\) and \(b\) a root of \(x^{3} + 2 \)
Inducing Field
The inertial type \(\tau\) becomes reducible over
\(K = L(c)\), \(c\) a root of \(x^{2} - b^{3} x + (3b^{2} + (3\mu_3 + 3))b \)
Underlying Character
Character \(\chi^A:\mathcal O_K^\times \to \mathbb C^\times\) with the following properties:
Order
4
Conductor exponent
11
Values on generators of
\((\mathcal{O}_K/\mathfrak p^{ 11 })^\times/U_{\mathfrak{p}^{ 11 } }\)
:
\(\begin{array}{l}
\chi^A\left(\mu_3c + 1 \right) &= i^{ 0 }
\\
\chi^A\left((-\mu_3 + 3)c + -\mu_3 + 3 \right) &= i^{ 0 }
\\
\chi^A\left((2\mu_3 + 2)b^{2}c + 1 \right) &= i^{ 0 }
\\
\chi^A\left(((2\mu_3 + 2)b^{2} + 2\mu_3)c + 4\mu_3 + 1 \right) &= i^{ 0 }
\\
\chi^A\left(((3\mu_3 + 3)b^{2} + 4\mu_3)c + 1 \right) &= i^{ 1 }
\\
\chi^A\left(((\mu_3 + 1)b + 2)c + (2\mu_3 + 2)b - 3 \right) &= i^{ 0 }
\\
\chi^A\left((3b + 2\mu_3)c + 2b + 4\mu_3 + 1 \right) &= i^{ 2 }
\\
\chi^A\left((\mu_3b^{2} + 4)c + 1 \right) &= i^{ 0 }
\end{array}
\)
Inertia Polynomial
The following polynomial defines a field \(L\) such that \(L^{un}\) is the fixed field of \(\tau\).
\( x^{48} + 24x^{47} + 300x^{46} + 2576x^{45} + 16974x^{44} + 91080x^{43} + 412900x^{42} + 1621308x^{41} + 5613729x^{40} + 17370896x^{39} + 48537804x^{38} + 123479556x^{37} + 287907342x^{36} + 618616440x^{35} + 1230461280x^{34} + 2274259796x^{33} + 3918564294x^{32} + 6311078760x^{31} + 9522781836x^{30} + 13487929704x^{29} + 17961709950x^{28} + 22518846280x^{27} + 26607286188x^{26} + 29652526764x^{25} + 31187043321x^{24} + 30965462640x^{23} + 29027178180x^{22} + 25684978172x^{21} + 21444164706x^{20} + 16880340264x^{19} + 12515582416x^{18} + 8728346844x^{17} + 5715842238x^{16} + 3507327800x^{15} + 2011412580x^{14} + 1074741384x^{13} + 533040710x^{12} + 244295184x^{11} + 102896808x^{10} + 39567116x^{9} + 13776705x^{8} + 4298904x^{7} + 1186464x^{6} + 284724x^{5} + 58122x^{4} + 9832x^{3} + 1356x^{2} + 156x + 19 \)