1. KMUTTFixed Point Research Laboratory, Room SCL 802 Fixed Point Laboratory, Science Laboratory Building, Department of Mathematics, Faculty of Science King Mongkut's University of Technology Thonburi (KMUTT) 126 Pracha‐Uthit Road, Bang Mod, Thung Khru Bangkok 10140 Thailand
2. Department of Medical Research, China Medical University Hospital China Medical University Taichung 40402 Taiwan
3. Department of Mathematics and Computer Science North University Center at Baia Mare, Technical University of Cluj‐Napoca Victoriei Str. no. 76 Baia Mare 430122 Romania
4. Academy of Romanian Scientists Ilfov Str. no. 3 Bucharest 050045 Romania