Coherent Euclidean Structures with Internal Orientational Parameters

This is the first version of an independent article within the Model of General Quasi-Coherence (MGQC) research program. This article introduces a formal geometric class of coherent Euclidean structures designed to distinguish between geometrically effective directions and internal orientational degrees of freedom. While standard Euclidean modeling typically treats all coordinates as dimension-generating variables, the framework proposed here separates a geometrically effective subspace from an internal subspace and studies their relationship through a structural projection. The author publishes under the name Antonio Dominguez-Digat. Earlier records may appear under Antonio Domínguez, Antonio Dominguez, or Antonio Dominguez Digat.