.. index:: single: interval_algebra
.. _interval_algebra/0:

.. rst-class:: right

**object**

``interval_algebra``
====================

Allen interval algebra over the 13 base relation atoms. Composition results are returned as canonical ordered duplicate-free lists.

| **Availability:** 
|    ``logtalk_load(intervals(loader))``

| **Author:** Paulo Moura
| **Version:** 1:0:0
| **Date:** 2026-05-13

| **Compilation flags:**
|    ``static, context_switching_calls``


| **Implements:**
|    ``public`` :ref:`interval_algebra_protocol <interval_algebra_protocol/0>`

| **Remarks:**
|    (none)

| **Inherited public predicates:**
|     :ref:`interval_algebra_protocol/0::compose/3`  :ref:`interval_algebra_protocol/0::converse/2`  :ref:`interval_algebra_protocol/0::relation/1`  

.. contents::
   :local:
   :backlinks: top

Public predicates
-----------------

(no local declarations; see entity ancestors if any)

Protected predicates
--------------------

(no local declarations; see entity ancestors if any)

Private predicates
------------------

(no local declarations; see entity ancestors if any)

Operators
---------

(none)