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layout: default
title: Definitions & Notation
nav_order: 2
has_children: true
---

# Definitions & Notation

Symbols, units and accounting conditions used throughout the protocol documentation. Product terms such as Belly, meal and diet describe the reserves, participation periods and reward choices users encounter.

## Section Navigation

- **[Symbols & Calculation Basis]({% link definitions/notation.md %})**: Variables, units and meal references.
- **[Terminology]({% link definitions/terminology.md %})**: Product terms and their meaning in use.
- **[Accounting Constraints]({% link definitions/invariants.md %})**: Principal isolation, allocation limits and funding for settled rewards.