Hashiguchi, Norikazu A surgery formula for the discrete Godbillon-Vey invariant. (English) Zbl 1062.57034 J. Math. Soc. Japan 56, No. 4, 1203-1209 (2004). Summary: Transversely piecewise linear foliations of codimension one on closed 3-manifolds are deformed by surgery. We show surgery formula for the discrete Godbillon-Vey invariant of these foliations. MSC: 57R30 Foliations in differential topology; geometric theory 57R20 Characteristic classes and numbers in differential topology 57N10 Topology of general \(3\)-manifolds (MSC2010) Keywords:transversely piecewise linear foliations; 3-manifolds PDFBibTeX XMLCite \textit{N. Hashiguchi}, J. Math. Soc. Japan 56, No. 4, 1203--1209 (2004; Zbl 1062.57034) Full Text: DOI