**Order theory** is a branch of mathematics that studies various ways of formalizing the intuitive notion of a mathematical ordering.

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## Subcategories

This category has the following 9 subcategories, out of 9 total.

### C

### D

### L

### O

### S

### W

## Pages in category "Order theory"

The following 162 pages are in this category, out of 162 total. This list may not reflect recent changes (learn more).

### A

### B

### C

- Cantor–Bernstein theorem
- Causal sets
- Centered set
- Chain-complete partial order
- Closure operator
- Cofinal (mathematics)
- Cofinality
- Compact element
- Comparability
- Comparability graph
- Complete Boolean algebra
- Complete Heyting algebra
- Complete partial order
- Completely distributive lattice
- Completeness (order theory)
- Containment order
- Countable chain condition
- Countryman line
- Covering relation
- Critical pair (order theory)
- Cyclic order

### D

### I

### K

### L

### M

### O

### P

- Pantachy
- Partial cyclic order
- Partially ordered group
- Partially ordered set
- Pasch's theorem
- Path ordering (term rewriting)
- Peck poset
- Pointwise order
- Poset topology
- Prefix order
- Preorder
- Preordered class
- Prewellordering
- Prime (order theory)
- Product order
- Projection (order theory)
- Pseudo-order
- Pseudoideal