Abstract
Let \( \fancyscript{I} \) be a subspace of an algebra \( \fancyscript{A} \) with the property that the sum of elements in \( \fancyscript{I} \) is also in \( \fancyscript{I} \): \( \fancyscript{I} \) is called a two-sided ideal if it is invariant under multiplication on both the left and the right by an arbitrary element of \( \fancyscript{A} \): \( \fancyscript{I} \) is called a left (right) ideal if it is invariant under multiplication from the left (right) only.
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© 2015 Springer International Publishing Switzerland
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Hestenes, D. (2015). Dirac Fields. In: Space-Time Algebra. Birkhäuser, Cham. https://doi.org/10.1007/978-3-319-18413-5_3
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DOI: https://doi.org/10.1007/978-3-319-18413-5_3
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Publisher Name: Birkhäuser, Cham
Print ISBN: 978-3-319-18412-8
Online ISBN: 978-3-319-18413-5
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