partition of unity
(mathematics) A collection of non-negative-valued functions defined on a topological space, such that every point has only finitely many nonzero values, and these sum to one.
(historical) In 12th- to 14th-century Germany, a peripatetic musician, often performing songs of courtly love.
plural of visagist
(obsolete, rare) A driving or striking against; an appulse.
局所的なデータから大域的な切断を構成するために、開被覆に従属する、各点で非負の値を取り各点で非ゼロの値を持つ関数は有限個しかなくそれらの和が1になるような非負値関数の集合（単位分割）を用いることが多い。
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