School of Mathematics and Statistics;
Henan University of Science and Technology;
Luoyang 471023;
China Department of Mathematics;
Zhejiang University;
Hangzhou 310027;
China;
College of Math-ematics and Information Science;
Henan Polytechnic University;
Jiaozuo 454000;
China;
multiplier Hopf algebra; diagonal crossed product; L-R smash product; twosided smash product; two-sided crossed product;