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Mirrors > Home > MPE Home > Th. List > mbfconstlem | Structured version Visualization version GIF version |
Description: Lemma for mbfconst 24702 and related theorems. (Contributed by Mario Carneiro, 17-Jun-2014.) |
Ref | Expression |
---|---|
mbfconstlem | ⊢ ((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvimass 5978 | . . . . . 6 ⊢ (◡(𝐴 × {𝐶}) “ 𝐵) ⊆ dom (𝐴 × {𝐶}) | |
2 | 1 | a1i 11 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) ⊆ dom (𝐴 × {𝐶})) |
3 | cnvimarndm 5979 | . . . . . 6 ⊢ (◡(𝐴 × {𝐶}) “ ran (𝐴 × {𝐶})) = dom (𝐴 × {𝐶}) | |
4 | fconst6g 6647 | . . . . . . . 8 ⊢ (𝐶 ∈ 𝐵 → (𝐴 × {𝐶}):𝐴⟶𝐵) | |
5 | 4 | adantl 481 | . . . . . . 7 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶𝐵) |
6 | frn 6591 | . . . . . . 7 ⊢ ((𝐴 × {𝐶}):𝐴⟶𝐵 → ran (𝐴 × {𝐶}) ⊆ 𝐵) | |
7 | imass2 5999 | . . . . . . 7 ⊢ (ran (𝐴 × {𝐶}) ⊆ 𝐵 → (◡(𝐴 × {𝐶}) “ ran (𝐴 × {𝐶})) ⊆ (◡(𝐴 × {𝐶}) “ 𝐵)) | |
8 | 5, 6, 7 | 3syl 18 | . . . . . 6 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ ran (𝐴 × {𝐶})) ⊆ (◡(𝐴 × {𝐶}) “ 𝐵)) |
9 | 3, 8 | eqsstrrid 3966 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → dom (𝐴 × {𝐶}) ⊆ (◡(𝐴 × {𝐶}) “ 𝐵)) |
10 | 2, 9 | eqssd 3934 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = dom (𝐴 × {𝐶})) |
11 | fconstg 6645 | . . . . . 6 ⊢ (𝐶 ∈ ℝ → (𝐴 × {𝐶}):𝐴⟶{𝐶}) | |
12 | 11 | ad2antlr 723 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶{𝐶}) |
13 | 12 | fdmd 6595 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → dom (𝐴 × {𝐶}) = 𝐴) |
14 | 10, 13 | eqtrd 2778 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = 𝐴) |
15 | simpll 763 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → 𝐴 ∈ dom vol) | |
16 | 14, 15 | eqeltrd 2839 | . 2 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
17 | 11 | ad2antlr 723 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶{𝐶}) |
18 | incom 4131 | . . . . 5 ⊢ ({𝐶} ∩ 𝐵) = (𝐵 ∩ {𝐶}) | |
19 | simpr 484 | . . . . . 6 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → ¬ 𝐶 ∈ 𝐵) | |
20 | disjsn 4644 | . . . . . 6 ⊢ ((𝐵 ∩ {𝐶}) = ∅ ↔ ¬ 𝐶 ∈ 𝐵) | |
21 | 19, 20 | sylibr 233 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (𝐵 ∩ {𝐶}) = ∅) |
22 | 18, 21 | syl5eq 2791 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → ({𝐶} ∩ 𝐵) = ∅) |
23 | fimacnvdisj 6636 | . . . 4 ⊢ (((𝐴 × {𝐶}):𝐴⟶{𝐶} ∧ ({𝐶} ∩ 𝐵) = ∅) → (◡(𝐴 × {𝐶}) “ 𝐵) = ∅) | |
24 | 17, 22, 23 | syl2anc 583 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = ∅) |
25 | 0mbl 24608 | . . 3 ⊢ ∅ ∈ dom vol | |
26 | 24, 25 | eqeltrdi 2847 | . 2 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
27 | 16, 26 | pm2.61dan 809 | 1 ⊢ ((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∩ cin 3882 ⊆ wss 3883 ∅c0 4253 {csn 4558 × cxp 5578 ◡ccnv 5579 dom cdm 5580 ran crn 5581 “ cima 5583 ⟶wf 6414 ℝcr 10801 volcvol 24532 |
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-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
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-reu 3070 df-rmo 3071 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-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 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-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 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-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-2o 8268 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-oi 9199 df-dju 9590 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-q 12618 df-rp 12660 df-xadd 12778 df-ioo 13012 df-ico 13014 df-icc 13015 df-fz 13169 df-fzo 13312 df-fl 13440 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-clim 15125 df-sum 15326 df-xmet 20503 df-met 20504 df-ovol 24533 df-vol 24534 |
This theorem is referenced by: ismbf 24697 mbfconst 24702 |
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