empty set

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empty set

Mathematics
The set that has no members or elements.
References in periodicals archive ?
A neutrosophic crisp topology (NCT) on a non empty set X is a family of [GAMMA] of neutrosophic crisp subsets in X satisfying the following axioms:
is the species of non empty finite sets and F = 1 + [F.
n if and only if the non empty upper s-level cut [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and the non empty lower t-level cut [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] are closed ideals of [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], for any s, t [member of] [0, 1].
0]-limit point of X, then for any non empty vg-open set U, there exists a non empty vg-open set V such that V [subset] U, x [not member of] vg[bar.
4 A hypertree is a non empty hypergraph H such that, given any vertices v and w in H,
5: [15] A restricted neutrosophic topology (RN-topology in short) on a non empty set X is a family of restricted neutrosophic subsets in X satisfying the following axioms
1] Let X be a non empty fixed set and I the closed interval [0,1].
i]) is non empty then it starts with an east (north) step, i [greater than or equal to] 1.
F]) be a non empty neutrosophic subset of a semihyperring R (i.
4] A collection G of non empty subsets of a space X is called a grill on X
When the proportion of non empty urns reaches r, one ball is removed in every non empty urn.

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