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Hatcher-Topology-of-Numbers
· Problem 8.3.13
Quadratic Fields
Mathematics — Algebraic Topology · stabilizers-ideals
Problem
Show that for each ideal
L
L
L
in
R
Δ
R_\Delta
R
Δ
the stabilizer of
L
L
L
is the same as the stabilizer of
α
L
\alpha L
α
L
for each nonzero
α
\alpha
α
in
R
Δ
R_\Delta
R
Δ
.
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