9 lessons covering everything from logic and sets to combinatorics and recurrence relations — each with theory, worked examples, practice questions, and a downloadable worksheet.
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Logic is the study of valid reasoning — the rules that let us combine true and f...
A set is simply a well-defined collection of distinct objects. Sets form the bas...
A relation describes how elements from one set connect to elements of another — ...
A function is a special type of relation where every input maps to exactly one o...
Graph theory studies networks of connected points — used to model everything fro...
A tree is a special type of graph with no cycles — a natural way to represent hi...
Boolean algebra deals with variables that take only two values — true/false or 1...
Combinatorics is the mathematics of counting — figuring out how many ways someth...
A recurrence relation defines each term of a sequence in terms of previous terms...
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