θ1⁡(z|τ)=-θ2⁡(z+12⁢π|τ)=-ⅈ⁢M⁢θ4⁡(z+12⁢π⁢τ|τ)=-ⅈ⁢M⁢θ3⁡(z+12⁢π+12⁢π⁢τ|τ),