Paper 0 Notation and Conventions Standard (v2.0)

This document is the Notation and Conventions Standard (Paper 0) for the Planck Deformation Unit Space Theory (PDUST) series. It unifies mathematical notation, physical symbol definitions, terminology, and cross-paper reference rules across the entire series, ensuring consistency and readability throughout the theoretical framework. Key contents include: Unified definitions of Planck units and intrinsic quantities of space Deformation variables: compression ratio κ, compression degree ξ, radial twist θ_r, axial twist θ_a Gravitational constant symbol system: G_space, G_eff, G_measured, G_CODATA, k Continuum Correspondence Principle Four fundamental deformation modes table (normal compression, radial twist, axial twist, tangential vibration) Damping and inertia symbols: η_P0, η_0, f_d Cross-paper symbol usage table Terminology standardization table This document serves as an independent reference for the entire PDUST series.