Disconnectivity

Disconnectivities are mathematical entities which stand in the way of a Space being contractible (i.e.,shrunk to a point, where the shrinking takes place inside the Space itself). When dealing withTopological Spaces, a disconnectivity is interpreted as a ``Hole'' in the space.Disconnectivities in Space are studied through the Extension Problem or the Lifting Problem.

• Whole Number
• Width (Partial Order)
• Width (Size)
• Wiedersehen Manifold
• Wieferich Prime
• Wielandt's Theorem
• Wiener Filter
• Wiener Function
• Wiener-Khintchine Theorem
• Wiener Measure
• Wiener Space
• Wigner 3j-Symbol
• Wigner 6j-Symbol
• Wigner 9j-Symbol
• Wigner-Eckart Theorem
• Wilbraham-Gibbs Constant
• Wilcoxon Rank Sum Test
• Wilcoxon Signed Rank Test
• Wild Knot
• Wild Point
• Wilf-Zeilberger Pair
• Wilkie's Theorem
• Williams p+1 Factorization Method
• Wilson Plug
• Wilson Prime