Wang, Weicang; Xu, Xu Intersection numbers on bundles and Euler characteristic. (English) Zbl 1056.57016 J. Math., Wuhan Univ. 23, No. 4, 394-396 (2003). Summary: We study the intersection numbers of cross sections of bundles on manifolds with boundary. By using the method of extending vector fields on doubled manifolds, we obtain an expression of the Euler characteristic in terms of intersection numbers. MSC: 57R19 Algebraic topology on manifolds and differential topology Keywords:bundles; intersection number; Euler characteristics PDFBibTeX XMLCite \textit{W. Wang} and \textit{X. Xu}, J. Math., Wuhan Univ. 23, No. 4, 394--396 (2003; Zbl 1056.57016)