Andradas Heranz, CarlosDíaz-Cano Ocaña, Antonio2023-06-202023-06-2020040019-2082https://hdl.handle.net/20.500.14352/49818Let X subset of R-n be a coherent analytic surface. We show that the connected components of global analytic subsets of X are global and we compute the stability index and Brocker's t-invariant of X. We also state a real Nullstellensatz for normal surfaces.engjournal articlehttp://www.math.uiuc.edu/~hildebr/ijm/summer04/final/diazcano.pdfrestricted access512.7Coherent surfacesreal analytic setsanalytic functions.Geometria algebraica1201.01 Geometría Algebraica