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Mathematical objects '''intersect''' when they have something in common. For example, the sets {1,2,3,4} and {2,4,6} intersect as {2,4}.
Mathematical objects '''intersect''' when they have something in common. For example, the sets {1,2,3,4} and {2,4,6} intersect as {2,4}.
For two sets A and B, their '''intersection''' is written as A∩B and is formally defined as A∩B = {x|xϵA AND xϵB}.
From geometry we have another example. [[Euclid]] postulated that:
From geometry we have another example. [[Euclid]] postulated that:
When two lines are not parallel, they must intersect.
When two lines are not parallel, they must intersect.
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[[Non-Euclidean_geometry|Non-Euclidean geometry]] concerns [[Geometry|geometries]] where the conclusion need not hold.
[[Non-Euclidean geometry]] concerns [[Geometry|geometries]] where the conclusion need not hold.
[[Category:Mathematics]]