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@article{10_4064_fm_107_2_145_148, author = {Yuri Gurevich}, title = {Two notes on formalized topology}, journal = {Fundamenta Mathematicae}, pages = {145--148}, publisher = {mathdoc}, volume = {107}, number = {2}, year = {1980}, doi = {10.4064/fm-107-2-145-148}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-107-2-145-148/} }
Yuri Gurevich. Two notes on formalized topology. Fundamenta Mathematicae, Tome 107 (1980) no. 2, pp. 145-148. doi : 10.4064/fm-107-2-145-148. http://geodesic.mathdoc.fr/articles/10.4064/fm-107-2-145-148/
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