กC[^ึe[^ึiปฬRPj
q=exp(2ฮiz)
E4(z)=1+240ฐะ3(n)q^n
E6(z)=1+504240ฐะ5(n)q^n
ข(z)=1/1728E{E4(z)^3-E6(z)^2}=qฎ(1-q^2)^24=q-24q^2+252q^3-EEE
j(z)=E4(z)^3/ข(z)=q^-1+744+196884q+EEE
ฦ(z)=ฐexp(ฮin^2z)=1+2q^1/2+2q^2+2q^9/2+EEE
ล(z)=ข(z)^1/24=q^1/24ฎ(1-q^n)
ษ(z)=16ล(z/2)^8ล(2z)^16/ล(z)^24=1-ล(z/2)^16ล(2z)^8/ล(z)^24=16q^1/2-128q+704q^3/2-EEE
f(z)=2F1(1/2,1/2,1:ษ(z))
2F1(1/2,1/2;1:x^2)=2/ฮEK(x)
2F1(1/2,1/2;1:ษ(x))=2/ฮEK(ใษ(x))=2/ฮEK(4ล(z/2)^4ล(2z)^8/ล(z)^12)
ข(z)=qฎ(1-q^n)^24=ฐั(m)q^m, |ั(p)|
2p^11/2
p(z)=1/z^2+ฐ((1/(z-ึ)^2-1/ึ^2)
g2=1/60Eฐ1/ึ^4,g3=1/140Eฐ1/ึ^6
(p'(z))^2=4(p(z))^3-g2p(z)-g3
ข=ข(E)=g2^3-27g3^2
j(ั)=2^63^3g2^3/ข
@@4ใE4(z)=2F1(1/12,5/12;1;1728/j(z))
j(i)=1728,E4(i)=Riึ^ฮj^4Rก^8(1/4)^USฮ^6
@@2F1(1/12,5/12;1;1)=4ใRก^8(1/4)^USฮ^6
F(t(z)=f(z)
t(z)=1728/j(z),f(z)=4ใE4(z)
t(z)=ษ(z),f(z)={ฦ(z)}^2