subrings #1971
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subrings #1971
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Signed-off-by: Ali Caglayan <[email protected]> <!-- ps-id: 2c292a34-55c5-49e4-84f5-e4b5a8a6a1fc -->
jdchristensen
approved these changes
Jun 2, 2024
Co-authored-by: Dan Christensen <[email protected]>
Signed-off-by: Ali Caglayan <[email protected]>
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We introduce the notion of a subring, some (very) basic theory about it and redefine the image of a ring homomorphism as a subring.
This will be useful later for giving subrings of matrix rings.