Properties

Label 41.4.2.1
Base \(\Q_{41}\)
Degree \(4\)
e \(2\)
f \(2\)
c \(2\)
Galois group $C_2^2$ (as 4T2)

Related objects

Learn more

Defining polynomial

\(x^{4} + 943 x^{2} + 242064\)  Toggle raw display

Invariants

Base field: $\Q_{41}$
Degree $d$: $4$
Ramification exponent $e$: $2$
Residue field degree $f$: $2$
Discriminant exponent $c$: $2$
Discriminant root field: $\Q_{41}$
Root number: $-1$
$|\Gal(K/\Q_{ 41 })|$: $4$
This field is Galois and abelian over $\Q_{41}.$

Intermediate fields

$\Q_{41}(\sqrt{3})$, $\Q_{41}(\sqrt{41})$, $\Q_{41}(\sqrt{41\cdot 3})$

Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.

Unramified/totally ramified tower

Unramified subfield:$\Q_{41}(\sqrt{3})$ $\cong \Q_{41}(t)$ where $t$ is a root of \( x^{2} - x + 12 \)  Toggle raw display
Relative Eisenstein polynomial:\( x^{2} - 41 t^{2} \)$\ \in\Q_{41}(t)[x]$  Toggle raw display

Invariants of the Galois closure

Galois group:$C_2^2$ (as 4T2)
Inertia group:Intransitive group isomorphic to $C_2$
Wild inertia group:$C_1$
Unramified degree:$2$
Tame degree:$2$
Wild slopes:None
Galois mean slope:$1/2$
Galois splitting model:$x^{4} + 943 x^{2} + 242064$  Toggle raw display