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| Mirrors > Home > ILE Home > Th. List > nzrnz | GIF version | ||
| Description: One and zero are different in a nonzero ring. (Contributed by Stefan O'Rear, 24-Feb-2015.) |
| Ref | Expression |
|---|---|
| isnzr.o | ⊢ 1 = (1r‘𝑅) |
| isnzr.z | ⊢ 0 = (0g‘𝑅) |
| Ref | Expression |
|---|---|
| nzrnz | ⊢ (𝑅 ∈ NzRing → 1 ≠ 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isnzr.o | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 2 | isnzr.z | . . 3 ⊢ 0 = (0g‘𝑅) | |
| 3 | 1, 2 | isnzr 13914 | . 2 ⊢ (𝑅 ∈ NzRing ↔ (𝑅 ∈ Ring ∧ 1 ≠ 0 )) |
| 4 | 3 | simprbi 275 | 1 ⊢ (𝑅 ∈ NzRing → 1 ≠ 0 ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1372 ∈ wcel 2175 ≠ wne 2375 ‘cfv 5270 0gc0g 13059 1rcur 13692 Ringcrg 13729 NzRingcnzr 13912 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-ext 2186 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1375 df-nf 1483 df-sb 1785 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-rex 2489 df-rab 2492 df-v 2773 df-un 3169 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-br 4044 df-iota 5231 df-fv 5278 df-nzr 13913 |
| This theorem is referenced by: nzrunit 13921 lringnz 13928 subrgnzr 13975 rrgnz 14001 |
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