Discrete Math › Section A · Introduction and preliminaries › Topic A.2
A tour of discrete structures
Every discrete problem is solved by modelling it with a few standard objects: sets, functions, sequences, relations and graphs. This tour introduces each one briefly, so you can recognise it when later topics study it in depth.
In this topic
- Structures are the tools
- Sets
- Building and comparing sets
- Functions
- Worked example: a set and a function
- Sequences
- Closed and recursive formulas
- Worked example: one sequence, two descriptions
- Relations
- Worked example: building a graph
- Common mistakes to avoid
- Key takeaways
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