Topology from Neighbourhoods
Using Mizar [9], and the formal topological space structure (FMT_Space_Str) [19], we introduce the three U-FMT conditions (U-FMT filter, U-FMT with point and U-FMT local) similar to those VI, VII, VIII and VIV of the proposition 2 in [10]: If to each element x of a set X there corresponds a set B(x)...
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| Format: | Article |
| Language: | English |
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Sciendo
2015-12-01
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| Series: | Formalized Mathematics |
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| Online Access: | https://doi.org/10.1515/forma-2015-0023 |