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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 13713 | . 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 1364 ∈ wcel 2167 ≠ wne 2367 ‘cfv 5258 0gc0g 12903 1rcur 13491 Ringcrg 13528 NzRingcnzr 13711 |
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 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-rex 2481 df-rab 2484 df-v 2765 df-un 3161 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-iota 5219 df-fv 5266 df-nzr 13712 |
This theorem is referenced by: nzrunit 13720 lringnz 13727 subrgnzr 13774 rrgnz 13800 |
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