Définitions
1.NounA continuous deformation of one continuous function or map to another."The concept of homotopy represents a formalisation of the intuitive idea of a smooth deformation of one curve into another."
2.NounThe relationship between two continuous functions where homotopy from one to the other is evident.
3.NounEllipsis of homotopy theory (“the systematic study of homotopies and their equivalence classes”).
4.NounA theory associating a system of groups with each topological space.
5.NounA system of groups associated with a topological space.