 ##  [Order Type](/order-type) 

  ##  [Order Type](https://mathlogic.quantumdictionary.io/order-type-0) 

  

 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The equivalence class of a totally ordered set under order-preserving bijections (order-isomorphisms); it captures the abstract pattern of comparisons between elements independently of their labels or underlying set.