Complex, quaternions, octonions,

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SUMMARY

The discussion centers on the mathematical concept of sedenions, which are numbers consisting of 15 imaginary parts and 1 real part. Sedenions are derived from octonions through the Cayley-Dickenson construction, allowing for the creation of algebras with dimensions that double at each iteration. However, sedenions do not form a division algebra, as demonstrated by the existence of non-zero elements a and b such that a.b = 0. This highlights the complexity and infinite nature of mathematical structures.

PREREQUISITES
  • Understanding of octonions and their properties
  • Familiarity with the Cayley-Dickenson construction
  • Knowledge of algebraic structures and division algebras
  • Basic concepts of complex numbers and imaginary units
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  • Research the properties and applications of sedenions in advanced mathematics
  • Explore the Cayley-Dickenson construction in detail
  • Learn about the implications of non-division algebras in mathematical theory
  • Investigate higher-dimensional algebras beyond sedenions
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quasar987
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What are called the numbers with 15 imaginary part and 1 real?

And is that the limit or are there people working with numbers of more than 15 imaginary parts? If so, how many, and what's the name for them? :smile:
 
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They're called the sedenions. Unfortunately, they do not form a division algebra (i.e. we have an a.b = 0, for a and b both not zero). We get the sedenions by performing the Cayley-Dickenson construction on octonions. We can repeat this construction as many times as we like, producing an algebra double the dimension of the previous algebra with each step.
 
Lonewolf said:
They're called the sedenions. Unfortunately, they do not form a division algebra (i.e. we have an a.b = 0, for a and b both not zero). We get the sedenions by performing the Cayley-Dickenson construction on octonions. We can repeat this construction as many times as we like, producing an algebra double the dimension of the previous algebra with each step.

Just one of the many places where math tends towards being infinitely complicated. Oh well, means we have a lot of work ahead of us!
 

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