# Category:Principles of Mathematics

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This category contains pages that are part of the * Principles of Mathematics* book. If a page of the book isn't showing here, please add text

`{{bookcat}}`

to the end of the page concerned. You can view a list of all subpages under the book main page (not including the book main page itself), regardless of whether they're categorized, here.The following 12 pages are in this category, out of 12 total.

### I

### S

- Principles of Mathematics/Set theory
- Principles of Mathematics/Set theory/Classes and foundation
- Principles of Mathematics/Set theory/Natural numbers
- Principles of Mathematics/Set theory/Pairs
- Principles of Mathematics/Set theory/Power sets
- Principles of Mathematics/Set theory/Replacement
- Principles of Mathematics/Set theory/Sets elements and subsets
- Principles of Mathematics/Set theory/Union and intersection