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 Skip Navigation LinksMath Help > Sets, Set theory, Number systems > Number systems > Number Systems Introduction

Number systems include the familiar integers, rationals, reals, etc. as well as unusual extensions of these sets such as p-adic and hyperreal numbers.

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Internet references

Wikipedia: Number system

Fact archive: Number system

Related pages in this website

Construction -- Construction of sets of numbers, starting with the original Peano Axioms, formulated so that zero is included in the set of natural numbers. (See Is Zero a Natural Number?)


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