Problem
Identify five-dimensional mathematical structures that recover ordinary Maxwell theory as a clean four- dimensional limit.
PAPER-001 / June 3, 2026 / corrected September 18, 2026
A teaching-oriented mathematical theory tree with speculative extensions.
01 / Abstract
This paper compares twelve speculative projection models for electromagnetism. They are not twelve interchangeable spacetime coordinates: the set includes a literal compact dimension, internal fibers, scalar fields, graph embeddings, material-state variables, and theory-space parameters.
The presentation is: each model states the problem it solves, the approach it uses, the Maxwell-recovery condition, the main tradeoff, and one possible new-electromagnetism idea. The paper does not claim that these models are empirically established or mutually equivalent. They are prototypes whose first tests are dimensional closure, a derived action, and recovery of ordinary Maxwell theory.
02 / Presentation
The paper is intentionally framed as a theory tree. It does not ask readers to accept a single speculative mechanism. It asks which precise assumptions make a five-dimensional structure project down to ordinary Maxwell electrodynamics, and which correction terms survive when those assumptions are relaxed.
Identify five-dimensional mathematical structures that recover ordinary Maxwell theory as a clean four- dimensional limit.
Work branch by branch: define the fifth coordinate, derive the projected field equations, and state the recovery condition.
Treat the models as speculative prototypes. Internal clarity comes first; empirical claims require later experiment.
03 / Theory Tree
Each branch gives the fifth coordinate a different interpretation, then asks what must be true for the observed four-dimensional field to satisfy Maxwell's equations.
04 / Verification
A branch is considered Maxwell-compatible only when it passes the paper's recovery checklist:
05 / Files
The PDF is the reader-facing manuscript. The TeX source is published beside it so the paper can be audited, rebuilt, revised, and cited from the original source.