Relative Homology
For a subspace, the relative homology Hn(X, A) is understood to be the homology of the quotient of the chain complexes, that is,
where the quotient of chain complexes is given by the short exact sequence
Read more about this topic: Singular Homology
Famous quotes containing the word relative:
“Personal change, growth, development, identity formation—these tasks that once were thought to belong to childhood and adolescence alone now are recognized as part of adult life as well. Gone is the belief that adulthood is, or ought to be, a time of internal peace and comfort, that growing pains belong only to the young; gone the belief that these are marker events—a job, a mate, a child—through which we will pass into a life of relative ease.”
—Lillian Breslow Rubin (20th century)