Issues 1-2

Ibrahim Mohammed Sulaiman1, Mustafa Mamat1* 1Faculty of Informatics and Computing, Universiti Sultan Zainal Abidin, 21300 Terengganu, Malaysia corresponding author: *must@unisza.edu.my sulaimanib@unisza.edu.my Submitted 24/07/2019, Revised 13/01/2020, 2nd revised: 11/06/2020, accepted: 09/09/2020 Abstract: The area of unconstrained optimization has been enjoying vivid growth recently, with significant progress on numerical innovative techniques. The classical technique for obtaining the […]

A. Duangpan1 and R. Boonklurb2 1,2Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Received 27 March, 2019; accepted in revised form 28 April, 2020 Abstract: Several boundary value problems are de ned on complex shaped domains, such as pentagonal, circular, L-shaped, butter y, peanut-shaped and elliptic domains. These irregular

T.V. Karpukhina1, V.N. Kovalnogov1,2, M.S. Boyarkin1 1Department of Heat-and-Power Engineering, Faculty of Power Engineering, Ulyanovsk State Technical University, SevernyVenets Street 32, 432027 Ulyanovsk, Russian Federation 2Scientific and Educational Center “Digital Industry”, South Ural State University, 76 Lenin Ave., 454080 Chelyabinsk, Russian Federation Received 10 March, 2020; Accepted in revised form 23 March, 2020 Abstract The