An obstruction to removing intersection points in immersed surfaces
نویسندگان
چکیده
منابع مشابه
An obstruction to embedding graphs in surfaces
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ژورنال
عنوان ژورنال: Topology
سال: 1997
ISSN: 0040-9383
DOI: 10.1016/s0040-9383(96)00020-1