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retract |
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retract [′rē‚trakt] (mathematics) A subsetRof a topological spaceXis a retract ofXif there is a continuous map ƒ fromXtoR,with ƒ(r) =rfor all pointsrofR. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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