Emergence XIII: Amplitude as Primitive in the Emergence Model

This paper establishes that Amplitude — the magnitude of the wave field — is primitive in the Emergence model. Amplitude is not derived from anything else. It is the basic variable of the canvas wave equation. From it, intensity and energy emerge. *The paper distinguishes between: · Amplitude (\Phi): the primitive field value· Single‑wave intensity (|\Phi|): the absolute magnitude· Combined intensity (|\Phi_i \Phi_j|): the product used in the threshold condition* Negative amplitude is physically meaningful — it corresponds to opposite polarity. Amplitude and polarity are independent primitives. This paper is a conceptual and foundational analysis, intended for readers interested in the structural assumptions of the Emergence model. Keywords: amplitude, primitive, intensity, threshold, wave magnitude, foundations of physics