For every proximity, does there exist a uniformity which generates this proximity?
This question may be generalized for different generalizations of proximities and uniformities. In fact I need it for funcoids and reloids: for every funcoid $f$ does there exist a reloid $g$ which generates it (that is $f = (\operatorname{FCD})g$)?
Reloids are just filters on the set of binary relations (on some set).
Funcoids are essentially a generalization of proximities with only the following axioms:
- ¬(∅ δ X) and ¬(X δ ∅);
- (A∪B)δC ⇔ AδC ∨ BδC;
- Cδ(A∪B) ⇔ CδA ∨ CδB.
Read http://www.mathematics21.org/binaries/funcoids-reloids.pdf at http://www.mathematics21.org/algebraic-general-topology.html about my theory of funcoids and reloids.