Information om | Engelska ordet CONTRAVARIANCE

Exempel på hur man kan använda CONTRAVARIANCE i en mening

• In physics, especially in multilinear algebra and tensor analysis, covariance and contravariance describe how the quantitative description of certain geometric or physical entities changes with a change of basis.
• 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.
• In the field of physics, the adjective covariant (as in covariance and contravariance of vectors) is often used informally as a synonym for "invariant".
• The difference between each of these transformations is shown conventionally through the indices as superscripts for contravariance and subscripts for covariance, and the coordinates and bases are linearly transformed according to the following rules:.
• The mnemonic PECS (Producer Extends, Consumer Super) from the book Effective Java by Joshua Bloch gives an easy way to remember when to use wildcards (corresponding to covariance and contravariance) in Java.
• The Data Science: Time Complexity, Inferential Uncertainty, and Spacekime Analytics book covers a wide range of topics including motivation for doing data science, characteristics of big datasets, artificial intelligence concepts and tools, neuroimaging genetics, climate change, problems with time, definition of Kime, economic forecasting, wave functions, definition and properties of operators, Fourier transforms, Kaluza-Klein theory, contravariance, velocity, Schrodinger equation, Lorenz transformation, Heisenberg's uncertainty principles, spacekime analytics, linear modelling using tensors, inferential uncertainty, and information theoretic versus data science formulations.

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