Operations on structures | General topology

Product topology

In topology and related areas of mathematics, a product space is the Cartesian product of a family of topological spaces equipped with a natural topology called the product topology. This topology differs from another, perhaps more natural-seeming, topology called the box topology, which can also be given to a product space and which agrees with the product topology when the product is over only finitely many spaces. However, the product topology is "correct" in that it makes the product space a categorical product of its factors, whereas the box topology is too fine; in that sense the product topology is the natural topology on the Cartesian product. (Wikipedia).

Product topology
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Related pages

Topological space | Metric space | Natural topology | Connectedness | If and only if | Index set | Topology | Net (mathematics) | Intersection (set theory) | T1 space | Subbase | Initial topology | Base (topology) | Comparison of topologies | Category of topological spaces | Euclidean topology | Metrizable space | Product (category theory) | Sequence | Locally compact space | Hausdorff space | Commutative diagram | Cylinder set | Dense set | Projection (set theory) | Natural number | Mathematics | Tychonoff space | Function (mathematics) | Union (set theory) | Real number | Cartesian product | Subset | Compact space | Tychonoff's theorem | Regular space | Irrational number | Normal space | Pointwise convergence | Universal property | Discrete space | Cantor set | Box topology