Properties

Label 1.3e2_13.3t1.1
Dimension 1
Group $C_3$
Conductor $ 3^{2} \cdot 13 $
Frobenius-Schur indicator 0

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Basic invariants

Dimension:$1$
Group:$C_3$
Conductor:$117= 3^{2} \cdot 13 $
Artin number field: Splitting field of $f= x^{3} - 39 x - 91 $ over $\Q$
Size of Galois orbit: 2
Smallest containing permutation representation: $C_3$
Parity: Even

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 7 }$ to precision 5.
Roots:
$r_{ 1 }$ $=$ $ 2\cdot 7 + 2\cdot 7^{2} + 4\cdot 7^{3} + 2\cdot 7^{4} +O\left(7^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 2 + 2\cdot 7 + 7^{2} + 5\cdot 7^{3} + 3\cdot 7^{4} +O\left(7^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 5 + 2\cdot 7 + 3\cdot 7^{2} + 4\cdot 7^{3} +O\left(7^{ 5 }\right)$

Generators of the action on the roots $ r_{ 1 }, r_{ 2 }, r_{ 3 } $

Cycle notation
$(1,2,3)$

Character values on conjugacy classes

SizeOrderAction on $ r_{ 1 }, r_{ 2 }, r_{ 3 } $ Character values
$c1$ $c2$
$1$ $1$ $()$ $1$ $1$
$1$ $3$ $(1,2,3)$ $\zeta_{3}$ $-\zeta_{3} - 1$
$1$ $3$ $(1,3,2)$ $-\zeta_{3} - 1$ $\zeta_{3}$
The blue line marks the conjugacy class containing complex conjugation.