... ∈ C, x = T x}. We use “ → ” to stand for strongconvergence and “ ”
for weak convergence. For a given sequence {x
n
} ⊂ C, let ω
w
(x
n
) denote the weak ω−limit
set.
Recall that T is said to ... the sequence {x
n
} converges strongly to a common fixed point of the
semigroup T := {T (t) : t ≥ 0}.
The purpose of this article is to prove the strong and weakconvergence of implicit iterative
process
x
n
= ... semigroups in Hilbert spaces. Xu [7] gave strongconvergence theorem for
contraction semigroups in Banach spaces. Chang et al. [8] proved the strongconvergence the-
orem for nonexpansive semi-groups...
... x
0
∈
C.
(5.3.4) The mapping x → f
(x) for x ∈ X is weak- to -weak
∗
continuous.
Then for any x ∈ C, {T
n
x}
n∈N
is weakly convergent to an element v ∈ F(T ).
Proof. Let v ∈ F (T ) and x ∈ C. If {T
n
x}
n∈N
is ... x, T y)−D
f
(x, y) ≤ 0 for all x, y ∈ [0, 0.85].
5 Weakconvergence theorems
In this section, we discuss the demiclosedness and the weakconvergence prob-
24
The modulus of uniform convexity ... Opial, Z: Weakconvergence of the sequence of successive approximations for
nonexpansive mappings. Bull. Amer. Math. Soc. 73, 591–597 (1967)
32
which in conjunction with (3), (4), and (6) implies...
... common fixed
point.
Proof. Since C is a nonempty bounded closed convex subset of the reflexive
Banach space X, it is weakly compact. By Proposition 3.5, each F (T
i
) is a
nonempty weakly compact subset ... f
(x) denotes the Gˆateaux
derivative of f at x.
In this article, we study the fixed point and weakconvergence problem for
4
mappings satisfying (1.5). This article is organized in the following ... Aoyama–Iemoto–Kohsaka–Takahashi fixed point theorem properly in
Section 4. Section 5 is devoting to studying the weakconvergence problem for
this new class of nonlinear mappings.
2 Preliminaries
In what follows,...
... Zegeye, H: Strong and weakconvergence theorems for asymptotically nonexpansive
mappings. J Math Anal Appl. 280, 364–374 (2003). doi:10.1016/S0022-247X(03)00061-1
17. Wang, C, Zhu, J: Convergence ... ||f - g||
2
≤ ||f - g||(h(l)+ε). Therefore ||f - g|| ≤ h(l). This completes the proof.
Now we can prove the weakconvergence theorem of the iterative sequence (3.1).
Zhu et al. Fixed Point Theory ... 2011:106
http://www.fixedpointtheoryandapplications.com/content/2011/1/106
Page 2 of 13
8. Cho, Y, Zhou, H, Guo, G: Weak and strongconvergence theorems for three-step iterations with errors for asymptotically
nonexpansive...
... Opial, Z: Weakconvergence of the sequence of successive approximations for nonexpansive mappings. Bull Am Math
Soc. 73, 591–597 (1967). doi:10.1090/S0002-9904-1967-11761-0
9. Reich, S: Weakconvergence ... Then,{Q
C
(I - l
n
A)} is a strongly nonexpansive sequence.
Proof. Notice first that Q
C
is a strongly nonexpansive mapping (see [16,17]). Next, we
prove that {I - l
n
A} is a strongly nonexpansive ... Science, Khon kaen
University, Khon kaen 40002,
Thailand
Abstract
We present two weakconvergence the orems for inverse strongly accretive mappings
in Banach spaces, which are supplements to the recen...
... whose inner product
and norm are denoted by ·, · and ·. → and are denoted by strongconvergence and
weak convergence, respectively. Let C be a nonempty closed convex subset of H and T : C ... Mathematical Analysis and Applications, vol. 20, pp. 197–228, 1967.
12 G. Marino and H K. Xu, Weak and strongconvergence theorems for strict pseudo-contractions in
Hilbert spaces,” Journal of Mathematical ... of
Mathematical Analysis and Applications, vol. 158, no. 2, pp. 407–413, 1991.
17 J. Schu, Weak and strongconvergence to fixed points of asymptotically nonexpansive mappings,”
Bulletin of the Australian...
... aspects.
We will use the following notation:
i for weakconvergence and → for strong convergence.
ii ω
ω
x
n
{x : x
n
i
x} denotes the weak ω-limit set of {x
n
}.
2. Preliminaries
A Banach ... Weak and strongconvergence theorems for strict pseudo-contractions in
Hilbert spaces,” Journal of Mathematical Analysis and Applications, vol. 329, no. 1, pp. 336–346, 2007.
8 H. Zhou, Convergence ... Reich, Weakconvergence theorems for nonexpansive mappings in Banach spaces,” Journal of
Mathematical Analysis and Applications, vol. 67, no. 2, pp. 274–276, 1979.
7 G. Marino and H K. Xu, “Weak...
... Zegeye, H: Strong and weakconvergence theorems for asymptotically nonexpansive
mappings. J Math Anal Appl. 280, 364–374 (2003). doi:10.1016/S0022-247X(03)00061-1
17. Wang, C, Zhu, J: Convergence ... ||f - g||
2
≤ ||f - g||(h(l)+ε). Therefore ||f - g|| ≤ h(l). This completes the proof.
Now we can prove the weakconvergence theorem of the iterative sequence (3.1).
Zhu et al. Fixed Point Theory ... 2011:106
http://www.fixedpointtheoryandapplications.com/content/2011/1/106
Page 7 of 13
8. Cho, Y, Zhou, H, Guo, G: Weak and strongconvergence theorems for three-step iterations with errors for asymptotically
nonexpansive...
... có sự so sánh trực quan sinh
động về các âm theo dạng mạnh và dạng yếu:
Strong form Weak form
Strong form Weak form
u
Butter / 'btə/
Autumn /
':təm/
o
Potato /
pə'teitou/ ...
Chúc các bạn học tốt và ngày càng “nói hay”!
Strong form và weak form
trong tiếng Anh
Phát âm dạng mạnh (strong form) và d
ạng yếu
(weak form) không phải là m
ột khái niệm xa lạ
đối ...
Bên cạnh những nguyên tắc chung như đã đề cập ở trên v
ề phát âm dạng
mạnh và dạng yếu (strong form and weak form), phát âm dạng yếu
nhẹ, không được nhấn mạnh mà thường biến âm thành /ə/. Mời...
... âm dạng mạnh và
dạng yếu (strong form and weak form), phát âm dạng yếu nhẹ, không được nhấn
mạnh mà thường biến âm thành /ə/.
Strong form Weak form Strong form Weak form
u
Butter / 'btə/ ... công việc.)
At
/æt/
/ət/
I’ll meet you at the office.
Phát âm dạng mạnh (strong form) và dạng yếu (weak form) không phải là một khái
niệm xa lạ đối với những người học tiếng Anh, thế ... (auxiliary verb). Một số
liên từ, giới từ hoặc đại từ có dạng phát âm mạnh và yếu như sau:
WordStrong form Weak form
The
/ði/
- Đứng trước nguyên âm
/ðə/
- Đứng trước phụ âm
What are you looking...
... conditions of strongconvergence theorem are different from the
strong convergence theorems for the implicit iterative processes in the literatures.
Finally, we discuss a strongconvergence theorem ... Takahashi, W: Weak and strongconvergence theorems for relatively nonexpansive mappings in Banach
spaces. Fixed Point Theory Appl 37–47 (2004). 2004
21. Matsushita, S, Takahashi, W: A strongconvergence ... we first consider weakconvergence theorems of implicit iterative
processes for two nonexpansive mappings and a mapping which satisfies condition (C).
Next, we consider strongconvergence theorem...
... conditions of strongconvergence theorem are different from the
strong convergence theorems for the implicit iterative processes in the literatures.
Finally, we discuss a strongconvergence theorem ... Takahashi, W: Weak and strongconvergence theorems for relatively nonexpansive mappings in Banach
spaces. Fixed Point Theory Appl 37–47 (2004). 2004
21. Matsushita, S, Takahashi, W: A strongconvergence ... we first consider weakconvergence theorems of implicit iterative
processes for two nonexpansive mappings and a mapping which satisfies condition (C).
Next, we consider strongconvergence theorem...
... C.
1.13
They obtained a weakconvergence theorem of modified Mann iterative processes for the class
of mappings which is not necessarily Lipschitzian. Moreover, a strongconvergence theorem
was ... pseudocontractions was introduced by Qihou 4 in 1996
see also 5.KimandXu6 studied weak and strongconvergence theorems for this class
of mappings. It is important to note that every asymptotically ... Applications, vol. 70, no. 10, pp. 3502–3511,
2009.
8 M. O. Osilike and S. C. Aniagbosor, Weak and strongconvergence theorems for fixed points of
asymptotically nonexpansive mappings,” Mathematical...