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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 13943 | . 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 2176 ≠ wne 2376 ‘cfv 5271 0gc0g 13088 1rcur 13721 Ringcrg 13758 NzRingcnzr 13941 |
| 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 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ne 2377 df-rex 2490 df-rab 2493 df-v 2774 df-un 3170 df-sn 3639 df-pr 3640 df-op 3642 df-uni 3851 df-br 4045 df-iota 5232 df-fv 5279 df-nzr 13942 |
| This theorem is referenced by: nzrunit 13950 lringnz 13957 subrgnzr 14004 rrgnz 14030 |
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