Mathbox for Jeff Madsen |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > rngone0 | Structured version Visualization version GIF version |
Description: The base set of a ring is not empty. (Contributed by FL, 24-Jan-2010.) (New usage is discouraged.) |
Ref | Expression |
---|---|
rngone0.1 | ⊢ 𝐺 = (1st ‘𝑅) |
rngone0.2 | ⊢ 𝑋 = ran 𝐺 |
Ref | Expression |
---|---|
rngone0 | ⊢ (𝑅 ∈ RingOps → 𝑋 ≠ ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rngone0.1 | . . 3 ⊢ 𝐺 = (1st ‘𝑅) | |
2 | 1 | rngogrpo 35203 | . 2 ⊢ (𝑅 ∈ RingOps → 𝐺 ∈ GrpOp) |
3 | rngone0.2 | . . 3 ⊢ 𝑋 = ran 𝐺 | |
4 | 3 | grpon0 28279 | . 2 ⊢ (𝐺 ∈ GrpOp → 𝑋 ≠ ∅) |
5 | 2, 4 | syl 17 | 1 ⊢ (𝑅 ∈ RingOps → 𝑋 ≠ ∅) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 ≠ wne 3016 ∅c0 4291 ran crn 5556 ‘cfv 6355 1st c1st 7687 GrpOpcgr 28266 RingOpscrngo 35187 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-fo 6361 df-fv 6363 df-ov 7159 df-1st 7689 df-2nd 7690 df-grpo 28270 df-ablo 28322 df-rngo 35188 |
This theorem is referenced by: rngoueqz 35233 |
Copyright terms: Public domain | W3C validator |