Volume 22, Number 11, 2021
Contents



Memory of Professor Wataru Takahashi
(22 January 1944-19 November 2020)

Preface
: Guest Editor Mayumi Hojo

Open R. Tyrrell Rockafellar
Dvances in convergence and scope of the proximal point algorithm

Open Z. Balanov, N. Hirano, W. Krawcewicz and X. Ye
Existence and Spatio-Temporal patterns of periodic solutions to second order non-autonomous equivariant delayed systems

Open Sehie Park
Revisit to generalized KKM maps

Open Kazimierz Goebel and Łukasz Piasecki
A contribution to the optimal retraction problem

  Donal O'Regan
A continuation theory for composite maps of weak sequential type


Open Biagio Ricceri
An improvement of a saddle point theorem and some of its applications

Open Jesús Ferrer and Enrique Llorens-Fuster
A comparison among several classes of mappings of generalized nonexpansive type

H. M. Srivastava, Manmohan Singh Chauhan and S. K. Upadhyay
Asymptotic series of a general symbol and pseudo-differential operators involving the Kontorovich-Lebedev transform

Habtu Zegeye and Getahun Bekele Wega
f-pseudo-pseudocontractive mappings and their f-fixed points in Banach spaces

Open Simeon Reich and Alexander J. Zaslavski
Convergence of inexact iterates of generalized contractive mappings

Open Xiangkai Sun, Xiaoqing Mo and Kok Lay Teo
On weighted robust approximate solutions for semi-infinite optimization with uncertain data


  Hidefumi Kawasaki
A discrete common fixed point theorem on L#-convex sets


Pub. on 19 November 2021(First Issue for Memory of Wataru)
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