A simple proof that localic subgroups are closed
Johnstone, P. T.
Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 29 (1988), p. 157-161 / Harvested from Numdam
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@article{CTGDC_1988__29_2_157_0,
     author = {Johnstone, Peter T.},
     title = {A simple proof that localic subgroups are closed},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     volume = {29},
     year = {1988},
     pages = {157-161},
     mrnumber = {943899},
     zbl = {0648.18007},
     language = {en},
     url = {http://dml.mathdoc.fr/item/CTGDC_1988__29_2_157_0}
}

Johnstone, P. T. A simple proof that localic subgroups are closed. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 29 (1988) pp. 157-161. http://gdmltest.u-ga.fr/item/CTGDC_1988__29_2_157_0/

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