2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65042We calculate chiral rings of the N=2 vertex algebras constructed from the combinatorial data of toric mirror symmetry and show that they coincide with the description of stringy cohomology conjectured previously in a joint work with A. Mavlyutov.29 pages LaTeX. The introduction is extended. The discussion of chiral rings is made more explicit. An example is includedAlgebraic GeometryHigh Energy Physics - TheoryQuantum Algebra14M25, 17B69text