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Other ways you can help
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Many mathematics articles in Wikipedia have been started from material from PlanetMath (both projects share the same free content license). That project, however, needs additional funds to keep going. Donations made to PlanetMath.org, Ltd. are tax deductible in the United States. See http://aux.planetmath.org/doc/donate.html for more information and donation links.
-- The Wikimedia Team