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subfield of mathematics
English: Topology is a branch of mathematics studying those properties of a geometric figure or solid that are not changed by stretching, bending and similar homeomorphisms.

See also Topology (Network).


Four Color TheoremEdit

Knot TheoryEdit

Separation axiomsEdit

Hierarchy of separation axioms
Regularity separation axiom
Normal separation axiom
Hausdorff Space


See also Homeomorphism

Möbius stripEdit