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Ciro Santilli @cirosantilli 37

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 Incoming links: Cross product

Algebra over a field Updated 2025-07-16
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A vector field with a bilinear map into itself, which we can also call a "vector product".
Note that the vector product does not have to be neither associative nor commutative.
Examples: en.wikipedia.org/w/index.php?title=Algebra_over_a_field&oldid=1035146107#Motivating_examples
  • complex numbers, i.e. R2 with complex number multiplication
  • R3 with the cross product
  • quaternions, i.e. R4 with the quaternion multiplication
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