Multilevel Explanation of Time Travel and the Grandfather Paradox: The Relationship Between Dynamically Rigid Fractal Spacetime Manifolds and Wormholes

his paper explores the feasibility of time travel within the framework of worm?holes and its resolution of the grandfather paradox, based on the Dynamically RigidFractal Spacetime Manifold (DR-FSTM) theory, combined with quantum gravityand multiverse models. By introducing fractal geometry and non-equilibrium space?time topology analysis, the essential nature of wormholes as inter-level spacetimeconnectors is demonstrated. The study reveals that the behavior of time travelersis constrained by the fractal hierarchical structure, with their causal influence lim?ited to newly generated spacetime branches, thereby mathematically circumventingclassical paradoxes. Numerical simulations further support the stability conditionsof multilevel spacetime networks.