# Category:Weak ordering

A **weak ordering** or **ordered set partition** is a set partition together with an order (i.e. a certain permutation) of its blocks.

It can be described as a special case of a *preferential arrangement* (Category:Preferential arrangements of set partitions).

## Subcategories

This category has only the following subcategory.

### P

## Media in category "Weak ordering"

The following 5 files are in this category, out of 5 total.

- 13-Weak-Orders.svg 400 × 400; 17 KB

- Cayley ordered Bell trees.svg 540 × 378; 19 KB

- Weak orderings 2.svg 387 × 68; 7 KB

- Weak orderings 3.svg 773 × 678; 99 KB

- Weak orderings 4.svg 695 × 694; 276 KB