Item:Q1398: Difference between revisions
Created a new Item: open set, set that does not contain any of its boundary points |
Created claim: has quality (P14): openness (Q1400) |
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| Property / subclass of | |||
| Property / subclass of: Gδ set / rank | |||
Normal rank | |||
| Property / has quality | |||
| Property / has quality: openness / rank | |||
Normal rank | |||