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arxiv: 1705.09323 · v4 · pith:N2YXU2CXnew · submitted 2017-05-25 · 🧮 math.GT · math.GN

Shy Maps in Topology

classification 🧮 math.GT math.GN
keywords conceptconnectedeveryimagemapsontopath-connectedsemilocally
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There is a concept in digital topology of a shy map. We define an analogous concept for topological spaces: We say a function is shy if it is continuous and the inverse image of every path-connected subset of its image is path-connected. Some basic properties of such maps are presented. For example, every shy map onto a semilocally simply connected space induces a surjection of fundamental groups (but a shy map onto a space that is not semilocally simply connected need not do so).

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