There is extensive theory given in the materials linked on the 3D Democracy Overview page https://www.wd-pl.com/1873-2/ – mostly categorized under the three dimensions of democracy visualized in the Venn Diagram, exploring the nature of power, the nature of participation and the nature of wisdom through the wise democracy lens.
At the bottom of the main Venn Diagram page https://www.wd-pl.com/4621-2/, you’ll find a short essay “4 Guidelines for a 3D Wise Democracy” which provides essential companion theory to the Venn Diagram, exploring dynamics of the ongoing practice of collective wisdom in the real world.
Details about wise democracy’s most fundamental principle – its prime directive – can be found at https://www.wd-pl.com/prime-directive/.
An extensive Glossary is located at https://www.wd-pl.com/glossary/. Quite in addition to its use as a reference, you can garner considerable theoretical understanding by browsing and reflecting on the many definitions there.
If you are interested in the theory of pattern languages, per se, and in some others that relate to wise democracy, check out the materials provided on the “Background” menu https://www.wd-pl.com/overview-background/.