Properties

Label 2.7_37.4t3.2c1
Dimension 2
Group $D_{4}$
Conductor $ 7 \cdot 37 $
Root number 1
Frobenius-Schur indicator 1

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Basic invariants

Dimension:$2$
Group:$D_{4}$
Conductor:$259= 7 \cdot 37 $
Artin number field: Splitting field of $f= x^{4} - 2 x^{3} + x + 2 $ over $\Q$
Size of Galois orbit: 1
Smallest containing permutation representation: $D_{4}$
Parity: Odd
Determinant: 1.7_37.2t1.1c1

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 67 }$ to precision 5.
Roots:
$r_{ 1 }$ $=$ $ 4 + 57\cdot 67 + 31\cdot 67^{2} + 57\cdot 67^{3} + 44\cdot 67^{4} +O\left(67^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 8 + 18\cdot 67 + 37\cdot 67^{2} + 2\cdot 67^{3} + 24\cdot 67^{4} +O\left(67^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 60 + 48\cdot 67 + 29\cdot 67^{2} + 64\cdot 67^{3} + 42\cdot 67^{4} +O\left(67^{ 5 }\right)$
$r_{ 4 }$ $=$ $ 64 + 9\cdot 67 + 35\cdot 67^{2} + 9\cdot 67^{3} + 22\cdot 67^{4} +O\left(67^{ 5 }\right)$

Generators of the action on the roots $r_1, \ldots, r_{ 4 }$

Cycle notation
$(1,4)$
$(1,2)(3,4)$

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 4 }$ Character value
$1$$1$$()$$2$
$1$$2$$(1,4)(2,3)$$-2$
$2$$2$$(1,2)(3,4)$$0$
$2$$2$$(1,4)$$0$
$2$$4$$(1,3,4,2)$$0$
The blue line marks the conjugacy class containing complex conjugation.