CONTENTSIntroduction................................................................................................................................................................................3I. General properties of k-to-one functions on locally compact spaces1. Multi-valued functions Ф and ψ......................................................................................................................................... 62. The proof of (I.11)..................................................................................................................................................................
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CONTENTSIntroduction.......................................................................................................................................................... 5I. PRELIMINARIES.............................................................................................................................................. 7§ 1. The closures of open subsets in r. o.-equivalent topologies............................................................. 7§ 2. The r. o.-maximal topologies.......................................................................................................................
The present paper deals with those continuous maps from compacta into metric spaces which assume each value at most twice. Such maps are called here, after Borsuk and Molski (1958) and as in our previous paper (1990), simple. We investigate the possibility of decomposing a simple map into essential and elementary factors, and the so-called splitting property of simple maps which raise dimension. The aim is to get insight into the structure of those compacta which have the property that simple maps...
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