Thursday, October 18, 2012

Vector Space Properties

Introduction to vector space properties:

A vector space is a set V consists of two operations: Vector addition and scalar multiplication. These operations satisfy assured properties. The scalars are taken as of a field F; anywhere F stands any for the real numbers R otherwise the complex numbers C. Consider the set V over a field F, if specified an operation vector addition describe in V, indicated v + w for every v, w in V, and an operation scalar multiplication in V, indicated b * v for every v in V and b in F. Let us see about the vector space properties.
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Description - Vector Space Properties:

Consider the vector space V is a set then the two operations addition and multiplication that satisfy the following properties.

Consider the two elements u and v in vector space V, after that u + v is and element of V .

u + v  =  v + u

u + (v + w)  =  (u + v) + w

There is an element 0 in V such that

u + 0  =  0 + u  =  u

For every u in V there is an element -u with

u + (-u)  =  0

If u is in V and b is a real number after that b*u is in V

b * (u + v)  =  b * u + b * v

(b + c) * u  =  b * u + c * u

b * (c * u)  =  (bd) * u

1 * u  =  u

Vector spaces contain numerous additional properties.  Followings are the some of the most basic ones.

Consider V is a vector space subsequently

0 * u = 0 for all u in V

c * 0 = 0 for all scalars c

If cu = 0 then either c = 0 or u = 0

(-1) u = -u for all u in V

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Example Problems for Vector Space Properties:

Example 1 for vector space properties

If u is vector then prove (-1) u = -u

Proof:

(-1) u = -u

(-1) u + u = (-1) u + (1) u 

(-1 + 1) u = (-1) u + (1) u 

0 * u = (-1) u + u

(-1) u + u = 0

Thus, (-1) u = -u

Example 2 for vector space properties:

If a and b are vectors then prove a + (b - a) = b

Proof:

a + (b - a) = a + (b + (-1) a)

= 1a + ((-1) a + b)

= (1a + (-1) a) + b

= (1 + (-1)) a + b

= (0 * a) + b

= 0 + b

= b
Proved that a + (b - a) = b

My Previous Blog :- http://advancemath.blogspot.in/2012/10/how-to-solve-matrix-equality.html

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