Trigintaduonion
Template:Short description Template:Infobox
In abstract algebra, the trigintaduonions, also known as the Template:Nowrap, Template:Nowrap, Template:Nowrap form a Template:Nowrap noncommutative and nonassociative algebra over the real numbers.[1][2]
Names
The word trigintaduonion is derived from Latin Template:Linktext 'thirty' + Template:Linktext 'two' + the suffix -nion, which is used for hypercomplex number systems. Other names include Template:Nowrap, Template:Nowrap, Template:Nowrap, and Template:Nowrap. Trigintaduonions have also been referred to as pathions (),[3][4] which Robert P. C. de Marrais had named in reference to the 32 paths of wisdom from the Kabbalistic (Jewish mystical) text Sefer Yetzirah. However, this term is not generally accepted as standard terminology.
Definition
Every trigintaduonion is a linear combination of the unit trigintaduonions , , , , ..., , which form a basis of the vector space of trigintaduonions. Every trigintaduonion can be represented in the form
with real coefficients Template:Mvar.
The trigintaduonions can be obtained by applying the Cayley–Dickson construction to the sedenions.[5] Applying the Cayley–Dickson construction to the trigintaduonions yields a 64-dimensional algebra called the 64-ions, 64-nions, sexagintaquatronions, or sexagintaquattuornions.
As a result, the trigintaduonions can also be defined as the following.[5]
An algebra of dimension 4 over the octonions :
- where and
An algebra of dimension 8 over quaternions :
- where and
An algebra of dimension 16 over the complex numbers :
- where and
An algebra of dimension 32 over the real numbers :
- where and
are all subsets of . This relation can be expressed as:
Multiplication
Properties
Like octonions and sedenions, multiplication of trigintaduonions is neither commutative nor associative. However, being products of a Cayley–Dickson construction, trigintaduonions have the property of power associativity, which can be stated as that, for any element of , the power is well defined. They are also flexible, and multiplication is distributive over addition.[6] As with the sedenions, the trigintaduonions contain zero divisors and are thus not a division algebra. Whereas the sedenions have 84 zero divisors,[7] the trigintaduonions have 1,260 zero divisors derived from 147 distinct triples.[8] Furthermore, in contrast to the octonions, both algebras do not even have the property of being alternative.
Geometric representations
Whereas octonion unit multiplication patterns can be geometrically represented by PG(2,2) (also known as the Fano plane) and sedenion unit multiplication by PG(3,2), trigintaduonion unit multiplication can be geometrically represented by PG(4,2).

Multiplication tables
The multiplication of the unit trigintaduonions is illustrated in the two tables below. Combined, they form a single 32×32 table with 1024 cells.[9][5]
Below is the trigintaduonion multiplication table for . The top half of this table, for , corresponds to the multiplication table for the sedenions. The top left quadrant of the table, for and , corresponds to the multiplication table for the octonions.
Below is the trigintaduonion multiplication table for .
Triples
There are 155 distinguished triples (or triads) of imaginary trigintaduonion units in the trigintaduonion multiplication table, which are listed below. In comparison, the octonions have 7 such triples, the sedenions have 35, while the sexagintaquatronions have 651.[10]
- 45 triples of type {α, α, β}: {3, 13, 14}, {3, 21, 22}, {3, 25, 26}, {5, 11, 14}, {5, 19, 22}, {5, 25, 28}, {6, 11, 13}, {6, 19, 21}, {6, 26, 28}, {7, 9, 14}, {7, 10, 13}, {7, 11, 12}, {7, 17, 22}, {7, 18, 21}, {7, 19, 20}, {7, 25, 30}, {7, 26, 29}, {7, 27, 28}, {9, 19, 26}, {9, 21, 28}, {10, 19, 25}, {10, 22, 28}, {11, 17, 26}, {11, 18, 25}, {11, 19, 24}, {11, 21, 30}, {11, 22, 29}, {11, 23, 28}, {12, 21, 25}, {12, 22, 26}, {13, 17, 28}, {13, 19, 30}, {13, 20, 25}, {13, 21, 24}, {13, 22, 27}, {13, 23, 26}, {14, 18, 28}, {14, 19, 29}, {14, 20, 26}, {14, 21, 27}, {14, 22, 24}, {14, 23, 25}, {15, 19, 28}, {15, 21, 26}, {15, 22, 25}
- 20 triples of type {β, β, β}: {3, 5, 6}, {3, 9, 10}, {3, 17, 18}, {3, 29, 30}, {5, 9, 12}, {5, 17, 20}, {5, 27, 30}, {6, 10, 12}, {6, 18, 20}, {6, 27, 29}, {9, 17, 24}, {9, 23, 30}, {10, 18, 24}, {10, 23, 29}, {12, 20, 24}, {12, 23, 27}, {15, 17, 30}, {15, 18, 29}, {15, 20, 27}, {15, 23, 24}
- 15 triples of type {β, β, β}: {3, 12, 15}, {3, 20, 23}, {3, 24, 27}, {5, 10, 15}, {5, 18, 23}, {5, 24, 29}, {6, 9, 15}, {6, 17, 23}, {6, 24, 30}, {9, 18, 27}, {9, 20, 29}, {10, 17, 27}, {10, 20, 30}, {12, 17, 29}, {12, 18, 30}
- 60 triples of type {α, β, γ}: {1, 6, 7}, {1, 10, 11}, {1, 12, 13}, {1, 14, 15}, {1, 18, 19}, {1, 20, 21}, {1, 22, 23}, {1, 24, 25}, {1, 26, 27}, {1, 28, 29}, {2, 5, 7}, {2, 9, 11}, {2, 12, 14}, {2, 13, 15}, {2, 17, 19}, {2, 20, 22}, {2, 21, 23}, {2, 24, 26}, {2, 25, 27}, {2, 28, 30}, {3, 4, 7}, {3, 8, 11}, {3, 16, 19}, {3, 28, 31}, {4, 9, 13}, {4, 10, 14}, {4, 11, 15}, {4, 17, 21}, {4, 18, 22}, {4, 19, 23}, {4, 24, 28}, {4, 25, 29}, {4, 26, 30}, {5, 8, 13}, {5, 16, 21}, {5, 26, 31}, {6, 8, 14}, {6, 16, 22}, {6, 25, 31}, {7, 8, 15}, {7, 16, 23}, {7, 24, 31}, {8, 17, 25}, {8, 18, 26}, {8, 19, 27}, {8, 20, 28}, {8, 21, 29}, {8, 22, 30}, {9, 16, 25}, {9, 22, 31}, {10, 16, 26}, {10, 21, 31}, {11, 16, 27}, {11, 20, 31}, {12, 16, 28}, {12, 19, 31}, {13, 16, 29}, {13, 18, 31}, {14, 16, 30}, {14, 17, 31}
- 15 triples of type {β, γ, γ}: {1, 2, 3}, {1, 4, 5}, {1, 8, 9}, {1, 16, 17}, {1, 30, 31}, {2, 4, 6}, {2, 8, 10}, {2, 16, 18}, {2, 29, 31}, {4, 8, 12}, {4, 16, 20}, {4, 27, 31}, {8, 16, 24}, {8, 23, 31}, {15, 16, 31}
Applications
The trigintaduonions have applications in quantum physics and other branches of modern physics.[9] More recently, the trigintaduonions and other hypercomplex numbers have also been used in research on neural networks[11] and digital signal processing.[3]
References
External links
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