| 单词 | null-space |
| 释义 | > as lemmasnull-space null-space n. Mathematics a space composed of all quantities that are transformed into zero by some given transformation. ΚΠ 1884 A. Buchheim in London, Edinb., & Dublin Philos. Mag. 5th Ser. 18 459 A linear space of (α−1) dimensions will be called an α-point... A matrix A of order n is considered as operating on the coordinates of the points of an n-point... If A is of nullity α, the equation A(xl…xn) = 0 is satisfied by all the points of a certain α-point, and conversely. I call this α-point the null space of A. 1941 G. Birkhoff & S. MacLane Surv. Mod. Algebra x. 268 The null-space of a linear transformation T is the set of all vectors ξ such that ξT = O. The null-space of a matrix A is the set of all row matrices X which satisfy the homogeneous linear equations XA = O. 1971 C. W. Curtis in M. B. Powell & G. Higman Finite Simple Groups iii. 171 F vanishes on the nullspace of α. < as lemmas |
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