 ##  [Indiscernible Sequence](/indiscernible-sequence) 

  ##  [Indiscernible Sequence](https://mathlogic.quantumdictionary.io/indiscernible-sequence-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

A sequence (a_i) of tuples in a structure such that for any two finite increasing index sequences i1&lt;...

 
 ##  [Indiscernible Sequence](https://algebra.quantumdictionary.io/indiscernible-sequence-1) 

  
 [![Algebra](/sites/default/files/styles/large/public/2026-01/Algebra.png.webp?itok=3pHxBnUF)](/topic-specific-dictionaries/pure-mathematics/algebra)

- Pure Mathematics -

**Algebra Dictionary**

 
Definition

An indiscernible sequence (over a base set A) is a sequence (a_i) indexed by an ordered set such that for every n and every two increasing n-tuples of indices i1&lt;...