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| Mirrors > Home > ILE Home > Th. List > lringnz | GIF version | ||
| Description: A local ring is a nonzero ring. (Contributed by Jim Kingdon, 20-Feb-2025.) (Revised by SN, 23-Feb-2025.) |
| Ref | Expression |
|---|---|
| lringnz.1 | ⊢ 1 = (1r‘𝑅) |
| lringnz.2 | ⊢ 0 = (0g‘𝑅) |
| Ref | Expression |
|---|---|
| lringnz | ⊢ (𝑅 ∈ LRing → 1 ≠ 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lringnzr 14231 | . 2 ⊢ (𝑅 ∈ LRing → 𝑅 ∈ NzRing) | |
| 2 | lringnz.1 | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 3 | lringnz.2 | . . 3 ⊢ 0 = (0g‘𝑅) | |
| 4 | 2, 3 | nzrnz 14220 | . 2 ⊢ (𝑅 ∈ NzRing → 1 ≠ 0 ) |
| 5 | 1, 4 | syl 14 | 1 ⊢ (𝑅 ∈ LRing → 1 ≠ 0 ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2201 ≠ wne 2401 ‘cfv 5328 0gc0g 13362 1rcur 13996 NzRingcnzr 14217 LRingclring 14228 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2212 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1810 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-rex 2515 df-rab 2518 df-v 2803 df-un 3203 df-in 3205 df-ss 3212 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-br 4090 df-iota 5288 df-fv 5336 df-nzr 14218 df-lring 14229 |
| This theorem is referenced by: aprap 14324 |
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