Eleven-Dimensional Cosmic Topology: Primitive Conical Nested Structure and Observational Evidence

Different from the purely mathematical construction of 11-dimensional spacetime in mainstream string theory, this paper takes the one-dimensional primitive unit as the fundamental constituent of the cosmos, and establishes an 11-dimensional topological model characterised by one outer great cone embedding three inner four-dimensional double cones. Combined with the gravitational-wave event GW170817, the physical reality of the four-dimensional growing meta-universe is solidly verified. A set of testable theoretical predictions concerning cosmic growth, sub-universe differentiation, dimensional confinement and high-dimensional field perturbations are proposed.