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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 14018 | . 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 1373 ∈ wcel 2177 ≠ wne 2377 ‘cfv 5280 0gc0g 13163 1rcur 13796 Ringcrg 13833 NzRingcnzr 14016 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2188 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-rex 2491 df-rab 2494 df-v 2775 df-un 3174 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-br 4052 df-iota 5241 df-fv 5288 df-nzr 14017 |
| This theorem is referenced by: nzrunit 14025 lringnz 14032 subrgnzr 14079 rrgnz 14105 |
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