Category:Examples of Vector Subtraction

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This category contains examples of Vector Subtraction.

Let $\struct {F, +_F, \times_F}$ be a field.

Let $\struct {G, +_G}$ be an abelian group.

Let $V := \struct {G, +_G, \circ}_R$ be the corresponding vector space over $F$.


Let $\mathbf x$ and $\mathbf y$ be vectors of $V$.


Then the operation of (vector) subtraction on $\mathbf x$ and $\mathbf y$ is defined as:

$\mathbf x - \mathbf y := \mathbf x + \paren {-\mathbf y}$

where $-\mathbf y$ is the negative of $\mathbf y$.


The $+$ on the right hand side is vector addition.


Arrow Representation

Let $\mathbf u$ and $\mathbf v$ be vector quantities of the same physical property.

Let $\mathbf u$ and $\mathbf v$ be represented by arrows embedded in the plane such that:

$\mathbf u$ is represented by $\vec {AB}$
$\mathbf v$ is represented by $\vec {AC}$

that is, so that the initial point of $\mathbf v$ is identified with the initial point of $\mathbf u$.

Vector-difference.png

Then their (vector) difference $\mathbf u - \mathbf v$ is represented by the arrow $\vec {CB}$.

Pages in category "Examples of Vector Subtraction"

The following 2 pages are in this category, out of 2 total.