January 24, 2025
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R3 – Division – Self Division and Unitaries

This post covers self division in R3. It looks at the cases where the result of division is a unitary and where it is not.

Self Division

In quaternions, R1 and R2, the division of an expression by itself results in the answer 1^. For example in R2: 

  • (6^+ 11iv)/ (6^+ 11iv) = 1^

However, in Wave Numbers R3, division of an expression by itself does not always yield a unitary result. The result of dividing an operand by an operator is another expression. Multiplying the operator by this result returns the original operand. For example:

    \[(2\hat{ } + 3i^v + 4j\hat{ })/(2\hat{ } + 3i^v + 4j\hat{ }) = (0.569\hat{ } + 1.033i^v + 1.089j\hat{ })\]

This result can be verified by multiplying it by the original operator:

    \[(2\hat{ } + 3i^v + 4j\hat{ })*(0.569\hat{ } + 1.033i^v + 1.089j\hat{ }) = (2\hat{ } + 3i^v + 4j\hat{ })\]

Unitaries

Division in Wave Numbers is the inverse of multiplication, meaning it reverses both scalar multiplication and a rotation. Multiplication in Wave Numbers moves a point from one location to another, while division moves a point back, effectively reversing scalar multiplication and circular motion.

In R3, self-division results in a unitary value when the division is by the same, single Opposite Value. For example:

  • 1^*1^ = 1^ =>  1^/1^ = 1^
  • 7^*1^ = 7^ =>  7^/7^ = 1^
  • 1v*1^ = 1^ =>  1^/1v = 1^ 
  • 9v*1^ = 9^ =>  9^/9v = 1^
  • 9^*1v = 9v =>  9v/9^ = 1v
  • 1jv*1j^ = 1j^ =>  1j^/j1v = 1j^ 
  • 9j^*1jv = 9jv =>  9jv/9j^ = 1jv

Moreover, division can never result in the Counter 1 as it cannot be the location of a point in R3.

Some answers to other types of division can consist of unitaries. For example:

  • (4^ + 5i^ + 6j^)*(^ ) = (4^ + 6i^+ 5jv)
    • =>  (4^ + 6i^+ 5jv) /(4^ + 5i^ + 6j^) = ^
  • (4^ + 5i^ + 6j^)(v + i^) = (10v + iv+ 9j^)
    • =>  (10v + iv+ 9j^)/(4^ + 5i^ + 6j^) = (v + i^)
  • (4^ + 5i^ + 6j^)(^ + i^ + j^) = (3^ + 7i^+ 5j^)
    • => (3^ + 7i^+ 5j^)/(4^ + 5i^ + 6j^) = (^ + i^ + j^)

Conclusion

Try these examples of R3 division with our online calculator.

Next: Multiplicative Inverses

Previous: Definition

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