Notational Engineering DPF

A pattern language for designing expressions that people and computational agents can interpret, manipulate, translate and use together.

• Author: Anatoly Levenchuk, with AI-assisted development and review
• Version: 20 September 2026
• Status: Eternal alpha: a repertoire open to correction and extension.
• License: © 2026 Anatoly Levenchuk. Original framework text: Creative Commons Attribution 4.0 International (CC BY 4.0). Cited sources retain their own terms.
• Publication: FPF ecosystem repository

Begin with something a reader needs to do: distinguish two cases, trace a dependency, change a rule, translate a diagram or follow a score. Use the Table of Contents to find the relevant method, then open its Problem frame, Solution, worked cases and checklist. The Readme follows worked connections between methods; the Preface explains how the methods connect and why they are organized this way.

The reference code NOT names this DPF. Its numbers are stable pattern addresses; § shows position within a Part. Expressions can use written symbols, spatial arrangement, sound, gesture or a combination. Each method states what its reader must already know or be able to obtain.

This publication belongs to the Foundational Thinking DPF Suite. Its Reference explains the mathematical, physical, computational and methodological connections. References such as A.6.3.RT.OE and C.2.8 name patterns in FPF Core. Open a supplier when its contribution is needed, and revisit a dependent conclusion when that contribution changes.

To cite this edition: Anatoly Levenchuk, Notational Engineering DPF, FPF ecosystem repository. Include the version date shown above.