On 18 June 2016, I participated in the 11th National Mathematics Competition at UTAR Sungai Long Campus organized by Universiti Tunku Abdul Rahman (UTAR). There were many students from different universities joining the competition, totalling 300 students. There were students from National University of Singapore, UTAR, USM, MRSM, Sunway, etc. Competition categories There were 3 […]

The notes below are condensed from ideas from Kenneth Rosen’s Discrete MathematicsĀ and its applications (Chapter 9: Relations, Chapter 2.3: Functions), UTMSPACE Discrete structures subject notes, and my own notes. Relations Relation, R is a subset of Cartesian product A x B. Elements of R is called ordered pairs. e.g. R = {(squirrel, mammal), (human, mammal), […]