Registry · Proposition
IV.P11
tau-effective
formalized
IV.P11 — Characters on T²
A character on T² is determined by (m,n) ∈ Z×Z via χ_{m,n}(θ_γ,θ_η) = exp(i(mθ_γ + nθ_η)). m = γ-winding (Radials), n = η-winding (Beacons).
Book IV
Part 3
Ch. 17