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Essential category weight and phantom maps
2001The purpose of this paper is to study the relationship between maps with infinite essential category weight and phantom maps (there is a brief summary of the main results on essential category weight in the appendix to this paper). It is not hard to see that any map with E(f) = oo is a phantom map.
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Orientations and bijections for toroidal maps with prescribed face-degrees and essential girth
Journal of Combinatorial Theory - Series A, 2020Eric Fusy
exaly

