simplices

Description

This element was used in the past to store all top-dimensional simplices in a dim-dimensional triangulation, for dimensions 5 ≤ dim ≤ 15. Since Regina 7.0, these top-dimensional simplices are now stored directly within the tri element (which replaces the old packet element for triangulation packets).

A simplices element stores the entire set of top-dimensional simplices that form a dim-dimensional triangulation, for dimensions 5 ≤ dim ≤ 15.

The total number of simplices must be specified by the size attribute. The individual simplices are numbered 0, 1, 2, etc., and their facet gluings are described by the corresponding child simplex elements. There must be precisely size child simplex elements in total.

Attributes

Example

The following XML snippet represents a 6-dimensional triangulation of the product B⁵×S¹, formed from two 6-simplices.

<simplices size="2">
  <simplex> 1 14038087 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1 2054353 </simplex>
  <simplex> 0 14038087 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 0 2054353 </simplex>
</simplices>