Phantom maps and injectivity of forgetful maps
نویسندگان
چکیده
منابع مشابه
Phantom Maps and Chromatic Phantom Maps
In the first part, we determine conditions on spectra X and Y under which either every map from X to Y is phantom, or no nonzero maps are. We also address the question of whether such all or nothing behaviour is preserved when X is replaced with V ∧ X for V finite. In the second part, we introduce chromatic phantom maps. A map is n-phantom if it is null when restricted to finite spectra of type...
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ژورنال
عنوان ژورنال: Journal of the Mathematical Society of Japan
سال: 2002
ISSN: 0025-5645
DOI: 10.2969/jmsj/1191593960