A Finite-Measurement Route to Hilbert-Space Quantum Kinematics in the Finite Relational Closure Framework

This manuscript presents a synthesis of the quantum branch of the Finite Relational Closure Framework (FRCF). The central claim is that finite-dimensional Hilbert-space quantum kinematics can be constructed from finite measurement primitives rather than assumed as an independent foundation. In standard presentations of quantum mechanics, a Hilbert space is usually introduced first, with measurement represented afterward by operators on that space. FRCF reverses this explanatory order. It begins with finite contexts, admissible relational assignments, finite-resolution equivalence, and measurement partitions. From these structures, the finite-resolution admissible classes \(\Sigma_{\varepsilon}(C)=\Sigma(C)/{\sim_{C,\varepsilon}}\) are obtained. The associated complex contribution space \(\mathcal{H}_{C,\varepsilon}=\mathbb{C}^{\Sigma_{\varepsilon}(C)}\), equipped with its finite inner product, is a finite-dimensional Hilbert space. The manuscript shows how finite measurement maps induce orthogonal decompositions, projection operators, Born-type probabilities from squared norms, and measurement update as conditioning on recorded finite outcomes. It also distinguishes this finite Hilbert-space kinematics from the separate generator problem governing contribution transport between contexts. The construction does not derive all of quantum mechanics. It does not determine a Hamiltonian, the Schrödinger equation, quantum field theory, or a unique physical generator. Its contribution is kinematic and foundational: it identifies Hilbert-space structure as an effective representation of finite admissible measurement distinctions within FRCF.