Suspension (dynamical systems)
Suspension is a construction passing from a map to a flow. Namely, let formula_1 be a metric space, formula_2 be a continuous map and formula_3 be a function (roof function or ceiling function) bounded away from 0. Consider the quotient space: The suspension of formula_5 with roof function formula_6 is the semiflow formula_7 induced by the time translation formula_8. If formula_9, then the quotient space is also called the mapping torus of formula_5.