单词	quadratic form
释义
随便看	invertibility of nonlinear system invertible element invertible ideal invertible linear operator invertible linear transformation invertible matrix invertible matrix invertible measure-preserving transformation invertible module invertible morphism invertible sheaf invertible transformation investment coefficient investment coefficient matrix investment problem invisible hand invisible matter involute function involute of the circle involute of the circle involution involution involution involution involution law in Boolean algebra

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