| 释义 |
ˈsubspace
[sub- 7 e.]
1. Math. A space (space n.1 17) that is wholly contained in another space, or whose points or elements are all in another space.
1931H. P. Robertson tr. Weyl's Theory of Groups & Quantum Mech. i. 20 ℜ is decomposed into mutually perpendicular sub-spaces. 1946Nature 12 Oct. 513/1 He has studied problems of deformation of sub-spaces, of ‘imbedding’, of automorphism, and of the variation of multiple integrals. 1968P. A. P. Moran Introd. Probability Theory v. 226 Particular subspaces of the space of all distributions. 1979Proc. London Math. Soc. XXXVIII. 221 Let X and Y both be subspaces of the Hilbert space of all square summable sequences.
2. Science Fiction. A physical space in which motion and communication are supposed to occur free of their usual limitations, or subject to different laws.
1955Mag. Fantasy & Sci. Fiction Aug. 106/1 The subspace radio had announced his coming, and preparations consonant with his exalted rank had been made. 1976L. Niven in R. Bretnor Craft Sci. Fiction 180 FTL, hyperdrive, hyperspace, subspace, all refer to means of traveling faster than light in an otherwise relativistic universe. |