Birman, Joan S.; Chillingworth, D. R. J. On the homeotopy group of a non-orientable surface. (English) Zbl 0232.57001 Proc. Camb. Philos. Soc. 71, 437-448 (1972); erratum ibid. 136, 441 (2004). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 33 Documents MSC: 57N05 Topology of the Euclidean \(2\)-space, \(2\)-manifolds (MSC2010) 57M05 Fundamental group, presentations, free differential calculus × Cite Format Result Cite Review PDF