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, 19:45, 23 April 2008
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| ===Note 19=== | | ===Note 19=== |
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| + | To construct the regular representations of ''S''<sub>3</sub>, we pick up from the data of its operation table: |
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| <pre> | | <pre> |
− | To construct the regular representations of S_3,
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− | we pick up from the data of its operation table:
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− |
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| Table 1. Symmetric Group S_3 | | Table 1. Symmetric Group S_3 |
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| | \ / | | | \ / |
| | v | | | v |
| + | </pre> |
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− | Just by way of staying clear about what we are doing, | + | Just by way of staying clear about what we are doing, let's return to the recipe that we worked out before: |
− | let's return to the recipe that we worked out before: | |
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− | It is part of the definition of a group that the 3-adic | + | It is part of the definition of a group that the 3-adic relation ''L'' ⊆ ''G''<sup>3</sup> is actually a function ''L'' : ''G'' × ''G'' → ''G''. It is from this functional perspective that we can see an easy way to derive the two regular representations. |
− | relation L c G^3 is actually a function L : G x G -> G. | |
− | It is from this functional perspective that we can see | |
− | an easy way to derive the two regular representations. | |
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| + | <pre> |
| Since we have a function of the type L : G x G -> G, | | Since we have a function of the type L : G x G -> G, |
| we can define a couple of substitution operators: | | we can define a couple of substitution operators: |