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单词 ProductRepresentationsOfJacobivarthetaFunctions
释义

product representations of Jacobi ϑ functions


The Jacobi theta functionsMathworldPlanetmath can be expressed as infinite products:

ϑ1(z;q)=2q1/4sinzn=1(1-q2n)(1-2q2ncos2z+q4n)
ϑ2(z;q)=2q1/4coszn=1(1-q2n)(1+2q2ncos2z+q4n)
ϑ3(z;q)=n=1(1-q2n)(1+2q2n-1cos2z+q4n-2)
ϑ4(z;q)=n=1(1-q2n)(1-2q2n-1cos2z+q4n-2)
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更新时间:2025/5/4 23:26:06