Aleksandrov-Cech Cohomology

A theory which satisfies all the Eilenberg-Steenrod Axioms with the possible exception of the Long Exact Sequence of a Pair Axiom, as well as a certain additional continuity Condition.

References

Hazewinkel, M. (Managing Ed.). Encyclopaedia of Mathematics: An Updated and Annotated Translation of the Soviet ``Mathematical Encyclopaedia.'' Dordrecht, Netherlands: Reidel, p. 68, 1988.

• Riesz Representation Theorem
• Riesz's Theorem
• Riffle Shuffle
• Rigby Points
• Right Angle
• Right Conoid
• Right Hyperbola
• Right Line
• Right Strophoid
• Right Strophoid Inverse Curve
• Right Triangle
• Rigid
• Rigidity Theorem
• Rigid Motion
• Ring
• Ring Cyclide
• Ring Function
• Ringoid
• Ring Torus
• Risch Algorithm
• Rising Factorial
• Rivest-Shamir-Adleman Number
• RMS
• r(n)
• Robbin Constant