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Two to one images and PFA |
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| Authors: | Alan Dow |
| Institution: | (1) Department of Mathematics, UNC-Charlotte, 9201 University City Blvd., 28223-0001 Charlotte, NC, USA |
| Abstract: | We prove that all maps onN * that are exactly two to one are trivial if PFA is assumed. This article was considerably improved by the careful referee's reports. Supported by NSF grant DMS-0103985. |
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