Lefschetz Theorem

Each double point assigned to an irreducible algebraic curve whose curve genus is nonnegative imposes exactly one condition.

See also

Hard Lefschetz Theorem

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Coolidge, J. L. A Treatise on Algebraic Plane Curves. New York: Dover, p. 104, 1959.

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Lefschetz Theorem

Cite this as:

Weisstein, Eric W. "Lefschetz Theorem." From MathWorld--A Wolfram Web Resource.

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