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doi: 10.1007/bf01472580
In this note the converses of recent fixed-point theorems due toKannan andChatterjea are obtained. An example is constructed to show that a metric space having the fixed-point property for homeomorphisms need not be metrically topologically complete. An example ofConnell is formulated in a more general perspective.
510.mathematics, Counterexamples in general topology, Fixed-point and coincidence theorems (topological aspects), Metric spaces, metrizability, Complete metric spaces, Article
510.mathematics, Counterexamples in general topology, Fixed-point and coincidence theorems (topological aspects), Metric spaces, metrizability, Complete metric spaces, Article
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 112 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 1% | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 1% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |