In mathematics, the zero set of a real-valued function f : X → R (or more generally, a function taking values in some additive group) is the subset of X (the inverse image of {0}). In other words, the zero set of the function f is the subset of X on which . The cozero set of f is the complement of the zero set of f (i.e. the subset of X on which f is nonzero).
Zero sets are important in several branches of geometry and topology.
Read more about Zero Set: Topology, Differential Geometry, Algebraic Geometry
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“I set out on this ground, which I suppose to be self evident, that the earth belongs in usufruct to the living: that the dead have neither powers nor rights over it.”
—Thomas Jefferson (17431826)
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