Look up manifold in Wiktionary, the free dictionary.

A manifold is an abstract mathematical space which, in a close-up view, resembles the spaces described by Euclidean geometry.

Manifold may also refer to:

Arts and music

• Manifold (comics), a fictional character in Marvel Comics publications
• Manifold Records, a record label
• Manifold Trilogy, by science fiction author Stephen Baxter

Engineering

• Manifold (fluid mechanics), a machine element used to split or combine a gas or liquid
  • Hydraulic manifold, a component used to regulate fluid flow in a hydraulic system, thus controlling the transfer of power between actuators and pumps
  • Manifold (scuba), in a scuba set, connects two or more diving cylinders
  • Vacuum gas manifold, a piece of apparatus used in chemistry to manipulate gases
  • Exhaust manifold, an engine part which collects the exhaust gases from multiple cylinders into one pipe
  • Inlet manifold or "intake manifold", an engine part which supplies the air or fuel/air mixture to the cylinders

Mathematics

• Manifold, an abstract mathematical space which, in a close-up view, resembles the spaces described by Euclidean geometry.
  • Manifold (magazine), a former magazine of the University of Warwick mathematical community
  • Topological manifold, a topological space which is a locally Euclidean Hausdorff space
    • Almost complex manifold
    • Algebraic manifold
    • Analytic manifold
    • Calabi–Yau manifold
    • Complex manifold, a manifold over the complex numbers
    • Differentiable manifold
    • Einstein manifold
    • Flag manifold
    • Flat manifold
    • G2 manifold
    • Hermitian manifold
    • Iwasawa manifold
    • Orientable manifold

People

• John Manifold (1915–1985), Australian poet and critic
• Sir Walter Manifold (1849–1928), Australian grazier and politician

Places

• Manifold, Pennsylvania, US
• River Manifold, a river in Staffordshire, West Midlands, England
  • Manifold Way, a footpath and cycleway following the route of a former railway

Science

• Manifold (fluid mechanics), a machine element used to split or combine a gas or liquid
  • various applications such as automotive exhaust manifolds: see Engineering section
• Vacuum manifold, in quantum field theory

Software

• Manifold System, a geographic information system software package
• ManifoldCF, Apache Software Foundation open-source project for transferring content between repositories or search indexes
• Manifold (prediction market), a reputation-based prediction market