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Publication:3860510
zbMath0425.55002MaRDI QIDQ3860510
Publication date: 1978
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fixed-point theorems (47H10) Contraction-type mappings, nonexpansive mappings, (A)-proper mappings, etc. (47H09) Degree, winding number (55M25)
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