One-parameter Fixed Point Theory
MR2944786 Reviewed Turzański, Marian The Bolzano-Poincaré-Miranda theorem—discrete version. Topology Appl. 159 (2012), no. 13, 3130–3135. (Reviewer: Pasquale Vetro) 54H25 (55M20)
One codimensional Wecken type theorems