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Fungrim entry: 2a48bd

χq1q2.=χq1.modq1χq2.modq2\chi_{{q}_{1} {q}_{2} \, . \, \ell} = \chi_{{q}_{1} \, . \, \ell \bmod {q}_{1}} \chi_{{q}_{2} \, . \, \ell \bmod {q}_{2}}
Assumptions:q1Z1andq2Z1and{1,2,,max ⁣(q1q2,2)1}andgcd ⁣(,q1)=gcd ⁣(,q2)=gcd ⁣(q1,q2)=1{q}_{1} \in \mathbb{Z}_{\ge 1} \,\mathbin{\operatorname{and}}\, {q}_{2} \in \mathbb{Z}_{\ge 1} \,\mathbin{\operatorname{and}}\, \ell \in \{1, 2, \ldots, \max\!\left({q}_{1} {q}_{2}, 2\right) - 1\} \,\mathbin{\operatorname{and}}\, \gcd\!\left(\ell, {q}_{1}\right) = \gcd\!\left(\ell, {q}_{2}\right) = \gcd\!\left({q}_{1}, {q}_{2}\right) = 1
TeX:
\chi_{{q}_{1} {q}_{2} \, . \, \ell} = \chi_{{q}_{1} \, . \, \ell \bmod {q}_{1}} \chi_{{q}_{2} \, . \, \ell \bmod {q}_{2}}

{q}_{1} \in \mathbb{Z}_{\ge 1} \,\mathbin{\operatorname{and}}\, {q}_{2} \in \mathbb{Z}_{\ge 1} \,\mathbin{\operatorname{and}}\, \ell \in \{1, 2, \ldots, \max\!\left({q}_{1} {q}_{2}, 2\right) - 1\} \,\mathbin{\operatorname{and}}\, \gcd\!\left(\ell, {q}_{1}\right) = \gcd\!\left(\ell, {q}_{2}\right) = \gcd\!\left({q}_{1}, {q}_{2}\right) = 1
Definitions:
Fungrim symbol Notation Short description
DirichletCharacterχq.\chi_{q \, . \, \ell} Dirichlet character
ZZGreaterEqualZn\mathbb{Z}_{\ge n} Integers greater than or equal to n
Range{a,a+1,,b}\{a, a + 1, \ldots, b\} Integers between given endpoints
GCDgcd ⁣(a,b)\gcd\!\left(a, b\right) Greatest common divisor
Source code for this entry:
Entry(ID("2a48bd"),
    Formula(Equal(DirichletCharacter(Mul(Subscript(q, 1), Subscript(q, 2)), ell), Mul(DirichletCharacter(Subscript(q, 1), Mod(ell, Subscript(q, 1))), DirichletCharacter(Subscript(q, 2), Mod(ell, Subscript(q, 2)))))),
    Variables(Subscript(q, 1), Subscript(q, 2), ell),
    Assumptions(And(Element(Subscript(q, 1), ZZGreaterEqual(1)), Element(Subscript(q, 2), ZZGreaterEqual(1)), Element(ell, Range(1, Sub(Max(Mul(Subscript(q, 1), Subscript(q, 2)), 2), 1))), Equal(GCD(ell, Subscript(q, 1)), GCD(ell, Subscript(q, 2)), GCD(Subscript(q, 1), Subscript(q, 2)), 1))))

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2019-10-05 13:11:19.856591 UTC