Construction
of
fixed
points
of
nonexpansive
mappings
and
asymptotically
nonexpansive
mappings
is
an
important
subject
in
the
theory
of
nonexpansive
mappings
and
finds
its
applications
in
a
number
of
applied
areas,
in
particular
in image
recovery
and
signal
processing
(see, for example, Byrne, 2004; Podilchuk and Mammone, 1990; Sezan and Stark, 1987; Youla, 1987, 1990).
However,
the
sequence {Tnx}1= 0 of
iterates
of
the
mapping
T at
a point x 2
C
may
not
converge
even
in
the
weak
topology
and
since
averaged
iterations
prevail.
Mann
(1953)
introduced
the following
iterative
procedure
for
approximating
a fixed
point
of
a nonexpansive
mapping
T in a
Hilbert
space H:
Construction of fixed points of nonexpansive mappings and asymptotically nonexpansive mappings is an important subject in the theory of nonexpansive mappings and finds its applications in a number of applied areas, in particular in image recovery and signal processing (see, for example, Byrne, 2004; Podilchuk and Mammone, 1990; Sezan and Stark, 1987; Youla, 1987, 1990).However, the sequence {Tnx}1= 0 of iterates of the mapping T at a point x 2 C may not converge even in the weak topology and since averaged iterations prevail. Mann (1953) introduced the following iterative procedure for approximating a fixed point of a nonexpansive mapping T in a Hilbert space H:
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