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All Journal International Journal of Electrical and Computer Engineering Traksi : Majalah Ilmiah Teknik Mesin Electronic Journal of Graph Theory and Applications (EJGTA) Jurnal Matematika & Sains Journal of Mathematical and Fundamental Sciences Jurnal Matematika Integratif
Djoko Suprijanto
Combinatorial Mathematics Research Group Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung
Astronomy Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Mathematics Mechanical Engineering Physics Transportation

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Journal : Electronic Journal of Graph Theory and Applications (EJGTA)

 1 
The complete list of Ramsey $(2K_2,K_4)$-minimal graphs Kristiana Wijaya; Edy Tri Baskoro; Hilda Assiyatun; Djoko Suprijanto
Electronic Journal of Graph Theory and Applications (EJGTA) Vol 3, No 2 (2015): Electronic Journal of Graph Theory and Applications
Publisher : GTA Research Group, Univ. Newcastle, Indonesian Combinatorics Society and ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/ejgta.2015.3.2.9

Abstract

Let $F, G,$ and $H$ be non-empty graphs. The notation $F \rightarrow (G,H)$ means that if all edges of $F$ are arbitrarily colored by red or blue, then either the subgraph of $F$ induced by all red edges contains a graph $G$ or the subgraph of $F$ induced by all blue edges contains a graph $H.$ A graph $F$ satisfying two conditions: $F \rightarrow (G,H)$ and $(F-e) \nrightarrow (G,H)$ for every $e \in E(F)$ is called a Ramsey $(G,H)-$minimal graph. In this paper, we determine all non-isomorphic Ramsey $(2K_2,K_4)$-minimal graphs.
Linear codes and cyclic codes over finite rings and their generalizations: a survey Djoko Suprijanto
Electronic Journal of Graph Theory and Applications (EJGTA) Vol 11, No 2 (2023): Electronic Journal of Graph Theory and Applications
Publisher : GTA Research Group, Univ. Newcastle, Indonesian Combinatorics Society and ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/ejgta.2023.11.2.11

Abstract

We survey a recent progress of cyclic codes over finite rings and their generalization to skew cyclic as well as skew cyclic codes with derivation over finite rings, focusing on structural properties of the codes. We also report recent developments on the construction methods of linear codes from graphs, in particular strongly regular as well as distance regular graphs.
Co-Authors - Subardi Aleams Barra Bagus Ilman Edy Tri Baskoro Harry Septanto Hilda Assiyatun Intan Muchtadi-Alamsyah Kristiana Wijaya Nopendri Nopendri Roza Lyndu R. Mahendra