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References to 'closure axioms'
1. alternative definition of category by rspuzio
2. closure map by CWoo
3. closure space by CWoo
4. intersection semilattice of a subspace arrangement by CWoo
5. intuitionistic logic by gribskoff
6. Kuratowski closure-complement theorem by CWoo
7. matroid by mps
8. proximal neighborhood by CWoo
9. topology via converging nets by CWoo