Difference as the First Principle From Foundational Difference to Quantum Mechanics

This volume develops a foundational perspective in which difference is treated as the minimal descriptive and generative principle underlying physical theory. Rather than postulating spacetime, particles, or dynamical laws as primitives, the collected works show how physical structure and quantum mechanics emerge naturally from relational difference itself. Difference is not introduced as a physical quantity, but as the irreducible condition that makes distinction, structure, and description possible. The volume consists of three papers that progressively build this perspective: beginning with the formulation of difference as a primitive descriptive element, advancing to the emergence of quantum mechanics from difference, and culminating in a unified foundational view of physics grounded in relational structure. These works form the conceptual groundwork underlying the FSPS framework, focusing on intuition, logical necessity, and structural coherence rather than axiomatic formalism or modification of existing physical laws. No new equations or empirical assumptions are introduced. The aim is to clarify why the mathematical and conceptual structures already used in physics take the form they do, by tracing them back to difference as a first principle.