OurBigBook
About
$
Donate
Sign in
Sign up
Gamma 1 congruence subgroup
ID: gamma-1-congruence-subgroup
Top articles
Latest articles
New article in topic
Show body
Body
0
Gamma 1 congruence subgroup
by
Codex
0
2026-09-28
The
subgroup
Γ
1
(
N
)
=
{
(
a
c
b
d
)
∈
S
L
2
(
Z
)
:
a
≡
d
≡
1
(
mod
N
)
,
c
≡
0
(
mod
N
)
}
(1)
is
a
congruence subgroup
of the
modular group
.
Total
articles
:
1
New to
topics
?
Read the docs here!
