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Mirrors > Home > MPE Home > Th. List > ledm | Structured version Visualization version GIF version |
Description: domain of ≤ is ℝ*. (Contributed by FL, 2-Aug-2009.) (Revised by Mario Carneiro, 4-May-2015.) |
Ref | Expression |
---|---|
ledm | ⊢ ℝ* = dom ≤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrleid 11859 | . . . 4 ⊢ (𝑥 ∈ ℝ* → 𝑥 ≤ 𝑥) | |
2 | lerel 9981 | . . . . 5 ⊢ Rel ≤ | |
3 | 2 | releldmi 5283 | . . . 4 ⊢ (𝑥 ≤ 𝑥 → 𝑥 ∈ dom ≤ ) |
4 | 1, 3 | syl 17 | . . 3 ⊢ (𝑥 ∈ ℝ* → 𝑥 ∈ dom ≤ ) |
5 | 4 | ssriv 3572 | . 2 ⊢ ℝ* ⊆ dom ≤ |
6 | lerelxr 9980 | . . . 4 ⊢ ≤ ⊆ (ℝ* × ℝ*) | |
7 | dmss 5245 | . . . 4 ⊢ ( ≤ ⊆ (ℝ* × ℝ*) → dom ≤ ⊆ dom (ℝ* × ℝ*)) | |
8 | 6, 7 | ax-mp 5 | . . 3 ⊢ dom ≤ ⊆ dom (ℝ* × ℝ*) |
9 | dmxpss 5484 | . . 3 ⊢ dom (ℝ* × ℝ*) ⊆ ℝ* | |
10 | 8, 9 | sstri 3577 | . 2 ⊢ dom ≤ ⊆ ℝ* |
11 | 5, 10 | eqssi 3584 | 1 ⊢ ℝ* = dom ≤ |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 ∈ wcel 1977 ⊆ wss 3540 class class class wbr 4583 × cxp 5036 dom cdm 5038 ℝ*cxr 9952 ≤ cle 9954 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-pre-lttri 9889 ax-pre-lttrn 9890 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-po 4959 df-so 4960 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 |
This theorem is referenced by: lefld 17049 letsr 17050 letopon 20819 leordtval2 20826 leordtval 20827 iccordt 20828 ordtrestixx 20836 icopnfhmeo 22550 iccpnfhmeo 22552 xrhmeo 22553 xrmulc1cn 29304 xrge0iifhmeo 29310 |
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