Linked from
The 13 pages that link to Measure space, each with the reason it gives.
Lebesgue integralNarrower topic: The integral is defined relative to this underlying structure.
Probability spaceNarrower topic: A probability space is a measure space with total measure one.
Lp spaceNarrower topic: Lp membership depends on integrating over a specified measure space.
Hahn decomposition theoremNarrower topic: The theorem partitions the underlying measurable space.