Leonardo's Score - La Geometria Intonata (it) - The Tuned Geometry (en). Leonardo's Last Supper: The Hidden Score — Proportion, Harmony and Perspective in Santa Maria delle Grazie

Leonardo da Vinci's The Last Supper (1494–98) in the Church and Dominican Convent of Santa Maria delle Grazie employs a sophisticated, modular geometric system that harmonizes depth, width, and height with unprecedented precision. The study reveals that Leonardo structured the space using a unitary module 'n,' where depth and height equal 66n and width 88n, creating a 4:3 ratio between dimensions. This system, verified through CAD analysis, eliminates progressive deformations observed in prior studies (e.g., Landrus, 2007) by rejecting the assumption of a square-based perspective grid. Instead, it demonstrates a dynamic interplay of rhythms—1:4:1 for the coffered ceiling and 2:1:2 for lateral walls—while maintaining symmetry around Christ's axis. The diagonal serves as both a perspectival vector toward Christ and a compositional element, showcasing Leonardo's economy of means and layered spatial logic. This research extends the author's prior work on Leonardo's rhythmic grammar, offering a cohesive framework to reinterpret his use of geometry in art.

De Leo, G. (2026). Leonardo's Score - La Geometria Intonata (it) - The Tuned Geometry (en). Leonardo's Last Supper: The Hidden Score — Proportion, Harmony and Perspective in Santa Maria delle Grazie. Zenodo. https://doi.org/10.5281/ZENODO.20334160