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Mirrors > Home > MPE Home > Th. List > lefld | Structured version Visualization version GIF version |
Description: The field of the 'less or equal to' relationship on the extended real. (Contributed by FL, 2-Aug-2009.) (Revised by Mario Carneiro, 4-May-2015.) |
Ref | Expression |
---|---|
lefld | ⊢ ℝ* = ∪ ∪ ≤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lerel 10970 | . . 3 ⊢ Rel ≤ | |
2 | relfld 6167 | . . 3 ⊢ (Rel ≤ → ∪ ∪ ≤ = (dom ≤ ∪ ran ≤ )) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ ∪ ∪ ≤ = (dom ≤ ∪ ran ≤ ) |
4 | ledm 18223 | . . 3 ⊢ ℝ* = dom ≤ | |
5 | lern 18224 | . . 3 ⊢ ℝ* = ran ≤ | |
6 | 4, 5 | uneq12i 4091 | . 2 ⊢ (ℝ* ∪ ℝ*) = (dom ≤ ∪ ran ≤ ) |
7 | unidm 4082 | . 2 ⊢ (ℝ* ∪ ℝ*) = ℝ* | |
8 | 3, 6, 7 | 3eqtr2ri 2773 | 1 ⊢ ℝ* = ∪ ∪ ≤ |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 ∪ cun 3881 ∪ cuni 4836 dom cdm 5580 ran crn 5581 Rel wrel 5585 ℝ*cxr 10939 ≤ cle 10941 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-pre-lttri 10876 ax-pre-lttrn 10877 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-po 5494 df-so 5495 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 |
This theorem is referenced by: letsr 18226 |
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