This work introduces a statistical framework for understanding galactic structure based on relational closure rather than fixed characteristic values. We define the closure fraction f ≈ 2πHr/V as a dimensionless measure comparing orbital closure to expansion. Using a sample of 124 disk galaxies derived from SPARC data, we find that f is not concentrated at a single value but exhibits an asymmetric, heavy-tailed distribution. While a single gamma distribution captures the global trend, a two-component gamma mixture provides a significantly improved description, revealing internal structure. The mixture identifies two dominant components with similar shape parameters (k ≈ 2), indicating a common closure structure realized at different scales. A characteristic concentration emerges around f ≈ 0.15, located between these components. This intermediate region is interpreted as an interference band arising from the interaction of distinct closure structures, rather than as a fundamental constant. These results suggest that observable galactic structure is governed by the statistical realization of closure, and that characteristic values can emerge from structural interference. The framework provides a structural interpretation linking empirical distributions, geometric relations, and multi-scale organization.
umimoto (Mon,) studied this question.