例句與造句

1. However, Sather supported both covariance and contravariance.
2. The mathematically precise way this happens is detailed at covariance and contravariance of vectors.
3. See also Covariance and contravariance of vectors.
4. :The connoisseurs will undoubtedly point out that I have played a bit loose with the covariance and contravariance.
5. :Covariance and contravariance ( computer science ) is the Wikipedia article about this, though it could stand improvement.
6. It's difficult to find covariance and contravariance in a sentence. 用covariance and contravariance造句挺難的
7. In some advanced contexts, a row and a column vector have different meaning; see covariance and contravariance of vectors.
8. The distinction between covariance and contravariance is particularly important for computations with tensors, which often have "'mixed variance " '.
9. In tensor analysis, superscripts are used instead of subscripts to distinguish covariant from contravariant entities, see covariance and contravariance of vectors and raising and lowering indices.
10. :Take a look at the Covariance and contravariance of vectors article, and in particular the talk ) 19 : 01, 18 March 2011 ( UTC)
11. However, if one changes coordinates, the way that coefficients change depends on the variance of the object, and one cannot ignore the distinction; see covariance and contravariance of vectors.
12. The duality between covariance and contravariance intervenes whenever a vector or tensor quantity is represented by its components, although modern differential geometry uses more sophisticated index-free methods to represent tensors.
13. This article uses the summation convention for indices, see covariance and contravariance of vectors for background on raised and lowered indices, and raising and lowering indices on how to switch between them.
14. C # has explicit support for covariance and contravariance in generic types, unlike C + + which has some degree of support for contravariance simply through the semantics of return types on virtual methods.
15. :In some linear-algebra topics, however, it appears that column and row vectors have different meanings ( that appear to have something to do with covariance and contravariance of vectors ).
16. The mnemonic for Producer Extends, Consumer Super ( PECS ), from the book " Effective Java " by Joshua Bloch gives an easy way to remember when to use covariance and contravariance.
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