Title: On Exact Sequences of the Rigid Fibrations,
Abstract: In 2002, Biss investigated on a kind of fibration which is called rigid
covering fibration (we rename it by rigid fibration) with properties similar to
covering spaces. In this paper, we obtain a relation between arbitrary
topological spaces and its rigid fibrations. Using this relation we obtain a
commutative diagram of homotopy groups and quasitopological homotopy groups and
deduce some results in this field.