Intersection is written using the symbol "$${\displaystyle \cap }$$" between the terms; that is, in infix notation. For example:
For an explanation of … See more

• Algebra of sets – Identities and relationships involving sets
• Cardinality – Definition of the number of elements in a set See more

• Weisstein, Eric W. "Intersection". MathWorld. See more

The intersection of two sets $${\displaystyle A}$$ and $${\displaystyle B,}$$ denoted by $${\displaystyle A\cap B}$$, is the set of all objects that are members of both … See more

In the previous section, we excluded the case where $${\displaystyle M}$$ was the empty set ($${\displaystyle \varnothing }$$). The reason is as … See more

• Devlin, K. J. (1993). The Joy of Sets: Fundamentals of Contemporary Set Theory (Second ed.). New York, NY: Springer-Verlag. ISBN 3-540-94094-4.
• Munkres, James R. (2000). "Set Theory and Logic". Topology (Second ed.). Upper Saddle River: … See more