CR singularities of real fourfolds in $\mathbb{C}^3$

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/227593CR singularities of real 4-submanifolds in complex 3-space are classified by using local holomorphic coordinate changes to transform the quadratic coefficients of the real analytic defining equation into a normal form. The quadratic coefficients determine an intersection index, which appears in global enumerative formulas for CR singularities of compact submanifolds.Complex Variables32V40; 15A21, 32S05, 32S20CR singularities of real fourfolds in $\mathbb{C}^3$text