Eisenberg, Murray; Guy, Robert A proof of the hairy ball theorem. (English) Zbl 0433.57011 Am. Math. Mon. 86, 572-574 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 18 Documents MSC: 57R25 Vector fields, frame fields in differential topology 55M25 Degree, winding number Keywords:existence of singularities for vector fields on the 2-sphere; mapping degree × Cite Format Result Cite Review PDF Full Text: DOI