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A branch of physics extending classical and quantum mechanics into higher‑dimensional spaces, analyzing how particles, rigid bodies, and fields behave when space has more than three dimensions. It includes higher‑dimensional analogs of Newton’s laws, Lagrangian and Hamiltonian mechanics, and statistical mechanics. While largely mathematical, N‑dimensional mechanics theory is used in string theory, cosmology, and certain condensed matter systems that behave as if they have effective higher dimensions.
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