Difference between revisions of "Vector field"
(stressing a point of dimensions, trying to elaborate) |
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| − | A '''vector field''' is a [[vector]] ''function'' that assigns a vector to each point in a region. | + | A '''vector field''' is a [[vector]] ''function'' that assigns a vector to each point in a region. |
| − | + | This is contrasted with a [[scalar field]] that merely assigns a scalar value to each point. | |
| + | |||
| + | == Formulation in Set Theory == | ||
| + | If <math>S</math> is a subset of the <math>\mathbb{R}^n</math>, then a vector field can be seen as the function <math>\vec{V}: S \rightarrow \mathbb{R}^n</math>, which maps an n-dimensional positional vector <math>\vec{x}=(x_1, x_2, \dots, x_n) \in \mathbb{R}^n</math> to each point <math>\vec{p} \in S</math>: | ||
| − | + | <center><math>\vec{V}(\vec{p}) = \vec{x}</math></center> | |
[[Category:vector analysis]] | [[Category:vector analysis]] | ||
[[Category:calculus]] | [[Category:calculus]] | ||
[[Category:mathematics]] | [[Category:mathematics]] | ||
Revision as of 16:57, December 26, 2009
A vector field is a vector function that assigns a vector to each point in a region.
This is contrasted with a scalar field that merely assigns a scalar value to each point.
Formulation in Set Theory
If Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle S} is a subset of the , then a vector field can be seen as the function , which maps an n-dimensional positional vector Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \vec{x}=(x_1, x_2, \dots, x_n) \in \mathbb{R}^n} to each point Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \vec{p} \in S} :