The cartesian product is an operator of the relational algebra which extends to relations the usual notion of cartesian product of sets. Since the sets of attributes of the input relations are disjoint, in R 1× R 2 each tuple of R 1 is combined with each tuple of R 2; moreover the a...
In this paper we introduc... G Deschrijver,EE Kerre - 《Notes on Instuitionistic Fuzzy Sets》 被引量: 23发表: 2003年 LINGUISTIC TRUTH-VALUED INTUITIONISTIC FUZZY ALGEBRA In this paper, a type-I product lattice implication algebra is given first. Second, some notes on Cartesian products of...
A x B =a, b) | a in A, b in. I.e. the product set contains all possible combinations of one element from each set. The idea can be extended to products of any number of sets. If we consider the elements in sets A and B as points along perpendicular axes in a two-dimensional...
The Cartesian product is an operator of the relational algebra which extends to relations the usual notion of Cartesian product of sets. Since the sets of attributes of the input relations are disjoint, inR1×R2, each tuple ofR1is combined with each tuple ofR2; moreover the arity of the ou...