Lecture
Rational Numbers: Construction and Properties
Description
This lecture introduces the concept of rational numbers as the 'smallest' extension of integers to solve various equivalent problems, such as performing all divisions by a non-zero integer and having a multiplicative inverse for every non-zero number. It covers the definition of fractions, equivalence of fractions, and properties of rational numbers. The lecture also includes proofs demonstrating the commutativity property of multiplication in rational numbers.
Official source
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