Is the Set of Ordered Pairs of Real Numbers a Vector Space Over Reals?

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SUMMARY

The set of ordered pairs of real numbers, denoted as V, is analyzed to determine if it forms a vector space over the reals under the defined operations. The addition operation is defined as (a1, a2) + (b1, b2) = (a1 + b1, a2b2), and scalar multiplication as c(a1, a2) = (ca1, a2). The discussion concludes that V does not satisfy the vector space axioms, particularly due to the scalar multiplication affecting only the first component and the potential absence of an identity element when a2 equals zero.

PREREQUISITES
  • Understanding of vector space axioms
  • Familiarity with operations on ordered pairs
  • Knowledge of scalar multiplication in vector spaces
  • Basic concepts of real numbers and their properties
NEXT STEPS
  • Review the vector space axioms in detail
  • Explore examples of vector spaces over the reals
  • Investigate the implications of scalar multiplication on vector components
  • Learn about alternative definitions of vector spaces
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Mathematics students, educators, and anyone studying linear algebra or vector space theory.

Punkyc7
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vector space?

Let v denote the set of order pairs of real numbers. If(a1,a2) and (b1,b2) are elements of V and c is an element of the reals, define (a1,a2)+(b1,b2)=(a1+b1,a2b2) and
c(a1,a2)=(ca1,a2)


is v a vector space over reals with these operations?

im thinking its not because the c only goes to a1

or because if a2=0 then there's no element in b2 that makes 1
 
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satrt by listing the vector space axioms and see if the operations satisfy them
 

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