In this theme

# Math insight

- Article
### Imaginary numbers are a reality••

February 10 2023, by Francisco Escudero GutierrezIt is undeniable that natural, integer, rational and real numbers are necessary to explain what happens in our daily life, but in high school some of us also hear about some weird objects called imaginary numbers, also known as complex numbers. What do we need these numbers for?Read article - Article
### Playing with Colors Part 2: An open problem related to graph colouring••

December 23 2022, by Leonidas TheocharousMathematicians often enjoy playing around with the concept of infinity and in the following, I will describe a problem defined on an infinite graph!Read article - Article
### Playing with Colors•

December 16 2022, by Leonidas TheocharousPart 1: Learn about applied and theoretical aspects of graph coloring: a tool that helps us design exam schedules or even solve Sudoku!Read article - Article
### Start to jet lag behind. Moving to fairer competitions.•

October 28 2022, by Roel LambersIt is safe to say that traveling impacts the peak performance of teams and athletes in general - studies have been done across all kinds of sports that confirm this intuitive idea. Thus, to avoid unfair- and unhappiness, an organizer should aim to minimize the effect of travel time disparities.Read article - Article
### Eigenvalues to the rescue••

October 14 2022, by Nandan MalhotraOn a quiet afternoon, professor Meth is working in her office in Leiden on some tantalizing mathematics problems. Suddenly, someone knocking on her door nervously disrupts the silence.Read article