# Properties

 Modulus $2$ Structure  Order $1$

Show commands: Pari/GP / SageMath

sage: H = DirichletGroup(2)

pari: g = idealstar(,2,2)

## Character group

 sage: G.order()  pari: g.no Order = 1

## Characters

Each row describes a character. When available, the columns show the orbit label, order of the character, whether the character is primitive, and several values of the character.

Character Orbit Order Primitive $$-1$$
$$\chi_{2}(1,\cdot)$$ 2.a 1 no $$1$$