- References
be a metric space, 
be a continuous map and 
be a function (roof function or ceiling function) bounded away from 0. Consider the quotient space
The suspension of 
with roof function 
is the semiflow[1] 
induced by the time translation 
.
If 
, then the quotient space is also called the mapping torus of .
References
1. ^M. Brin and G. Stuck, Introduction to Dynamical Systems, Cambridge University Press, 2002.
1 : Dynamical systems
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