Cellina, Arrigo; Lasota, A. A new approach to the definition of topological degree for multi-valued mappings. (English) Zbl 0194.44801 Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 47, 434-440 (1969). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 44 Documents MSC: 54C60 Set-valued maps in general topology Keywords:functional analysis × Cite Format Result Cite Review PDF