2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60816We prove that the vertex operator algebra $V_{Zα}^{+}$ is rational if $<α,α>/2$ is a prime integer.18 pages, LatexQuantum AlgebraThe charge conjugation orbifold $V_{Zα}^{+}$ is rational when $<α,α>/2$ is primetext