Nonpositive immersions, sectional curvature, and subgroup properties.
Wise, Daniel T.
Electronic Research Announcements of the American Mathematical Society [electronic only], Tome 9 (2003), p. 1-9 / Harvested from The Electronic Library of Mathematics
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Publié le : 2003-01-01
DOI : https://doi.org/10.1090/S1079-6762-03-00105-7
EUDML-ID : urn:eudml:doc:228257 
@article{01930463,
     title = {Nonpositive immersions, sectional curvature, and subgroup properties.},
     journal = {Electronic Research Announcements of the American Mathematical Society [electronic only]},
     volume = {9},
     year = {2003},
     pages = {1-9},
     doi = {10.1090/S1079-6762-03-00105-7},
     zbl = {1059.20041},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01930463}
}

Wise, Daniel T. Nonpositive immersions, sectional curvature, and subgroup properties.. Electronic Research Announcements of the American Mathematical Society [electronic only], Tome 9 (2003) pp. 1-9. doi : 10.1090/S1079-6762-03-00105-7. http://gdmltest.u-ga.fr/item/01930463/