symmetric
sym·met·ri·cal
S0958500 (sĭ-mĕt′rĭ-kəl) also sym·met·ric (-rĭk)symmetric
(sɪˈmɛtrɪk)Adj. | 1. | symmetric - having similarity in size, shape, and relative position of corresponding parts |
单词 | symmetric | |||
释义 | symmetricsym·met·ri·calS0958500 (sĭ-mĕt′rĭ-kəl) also sym·met·ric (-rĭk)symmetric(sɪˈmɛtrɪk)
symmetricadjectivesymmetricsymmetric(mathematics)x R y => y R x If it is also antisymmetric (x R y & y R x => x == y) thenx R y => x == y, i.e. no two different elements are related. 2. In linear algebra, a member of the tensor product of avector space with itself one or more times, is symmetric ifit is a fixed point of all of the linear isomorphisms ofthe tensor product generated by permutations of the orderingof the copies of the vector space as factors. It is said tobe antisymmetric precisely if the action of any of theselinear maps, on the given tensor, is equivalent tomultiplication by the sign of the permutation in question. symmetricNo difference in opposing modes. It typically refers to speed. For example, in symmetric operations, it takes the same time to compress and encrypt data as it does to decompress and decrypt it. Contrast with asymmetric.symmetricsym·met·ric, symmetrical (si-metrik, -ri-kăl)symmetric
Synonyms for symmetric
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