TY - JOUR AU - Ferrera Cuesta, Juan AU - Puente Muñoz, María Jesús De La PY - 1994 DO - 10.1080/00927879408825172 SN - 0092-7872 UR - https://hdl.handle.net/20.500.14352/57278 T2 - Communications in Algebra AB - Let f : R(2) --> R be an open polynomial function. Then, f changes sign across V(f) (alternatively around a singular point of V(f)) and the function c : R --> N expressing the number c(lambda) of connected components of the lambda-level curve of f is... M2 - 5973 PB - Taylor & Francis KW - Open polynomial function KW - Real plane KW - Real line KW - Sign KW - Level curves TI - Level curves of open polynomial functions on the real plane. TY - journal article VL - 22 ER -