Abstract
Let X be a metric space (not necessarily complete). A map \(f:X\rightarrow X\) is said to be closed if, whenever \(x_n\rightarrow x\) and \(f(x_n)\rightarrow y\), it follows that \(y=f(x)\).
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Pata, V. (2019). Problems. In: Fixed Point Theorems and Applications. UNITEXT(), vol 116. Springer, Cham. https://doi.org/10.1007/978-3-030-19670-7_26
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DOI: https://doi.org/10.1007/978-3-030-19670-7_26
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