Douglas Blumeyer's RTT How-To: Difference between revisions

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We’ll look in more detail later at how exactly to best find these generators, once you know which primes to make them out of.
We’ll look in more detail later at how exactly to best find these generators, once you know which primes to make them out of.
{| class="wikitable"
|+
!operations
!progressive product (AKA wedge product, exterior product)
a ∧ b
!regressive product (AKA vee product)
a ∨ b
<nowiki>*</nowiki>(*a ∧ *b)
!right interior product
a ⨽ b
∗(∗a ∧ b)
examples given where grade(a) ≥ grade(b)
!(left) interior product
a ⨼ b
<nowiki>*</nowiki>(a ∧ *b)
examples given where grade(a) < grade(b)
!symmetrical interior product
a • b = if grade(a) ≥ grade(b), a ⨽ b; else a ⨼ b
|-
!resultant grade, assuming empty intersections
!grade(a) + grade(b)
!grade(a) + grade(b) - dimensionality
!grade(a) - grade(b)
!grade(b) - grade(a)
!if grade(a) ≥ grade(b), grade(a) - grade(b); else grade(b) - grade(a)
|-
!resultant variance
!same as a (and b)
!same as a (and b)
!same as a
!same as b
!if grade(a) ≥ grade(b), same as a; else same as b
|-
!multicovector with multicovector
⟨] ⟨]
|⟨12 19 28 34] ∧ ⟨19 30 44 53] = ⟨⟨1 4 10 4 13 12]]
|⟨⟨⟨1 2 -3 -2 1 -4 -5 12 9 -19]]] ∨ ⟨⟨⟨⟨1 2 1 2 3]]]] = ⟨⟨-6 7 2 -15 25 20 -3 -15 -59 -49]]
|ND
|ND
|ND
|-
!multivector with multivector
[⟩ [⟩
|[4 -4 1 0⟩ ∧ [13 -10 0 1⟩ = [[12 -13 4 10 -4 1⟩⟩
|[[44 -30 19⟩⟩ ∨ [[28 -19 12⟩⟩ = [4 -4 1⟩
|ND
|ND
|ND
|-
!multicovector with multivector
⟨] [⟩
|ND
|ND
|⟨⟨⟨1 2 -3 -2 1 -4 -5 12 9 -19]]] ⨽ [-3 2 -1 2 -1⟩ = ⟨⟨6 -7 -2 15 -25 -20 3 15 59 49]]
|⟨12 19 28] ⨼ [[44 -30 19⟩⟩ = [4 -4 1⟩
|(in terms of other two interior products)
|-
!multivector with multicovector
[⟩ ⟨]
|ND
|ND
|[[44 -30 19⟩⟩ ⨽ ⟨12 19 28] = [-4 4 -1⟩
|[-3 2 -1 2 -1⟩ ⨼ ⟨⟨⟨1 2 -3 -2 1 -4 -5 12 9 -19]]] = ⟨⟨-6 7 2 -15 25 20 -3 -15 -59 -49]]
|(in terms of other two interior products)
|}


== other topics (TBD) ==
== other topics (TBD) ==