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Mirrors > Home > MPE Home > Th. List > ringidcl | Structured version Visualization version Unicode version |
Description: The unit element of a ring belongs to the base set of the ring. (Contributed by NM, 27-Aug-2011.) (Revised by Mario Carneiro, 27-Dec-2014.) |
Ref | Expression |
---|---|
ringidcl.b |
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ringidcl.u |
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Ref | Expression |
---|---|
ringidcl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2622 |
. . 3
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2 | 1 | ringmgp 18553 |
. 2
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3 | ringidcl.b |
. . . 4
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4 | 1, 3 | mgpbas 18495 |
. . 3
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5 | ringidcl.u |
. . . 4
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6 | 1, 5 | ringidval 18503 |
. . 3
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7 | 4, 6 | mndidcl 17308 |
. 2
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8 | 2, 7 | syl 17 |
1
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