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Mirrors > Home > MPE Home > Th. List > mbfconstlem | Structured version Visualization version GIF version |
Description: Lemma for mbfconst 24333 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 5921 | . . . . . 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 5922 | . . . . . 6 ⊢ (◡(𝐴 × {𝐶}) “ ran (𝐴 × {𝐶})) = dom (𝐴 × {𝐶}) | |
4 | fconst6g 6553 | . . . . . . . 8 ⊢ (𝐶 ∈ 𝐵 → (𝐴 × {𝐶}):𝐴⟶𝐵) | |
5 | 4 | adantl 485 | . . . . . . 7 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶𝐵) |
6 | frn 6504 | . . . . . . 7 ⊢ ((𝐴 × {𝐶}):𝐴⟶𝐵 → ran (𝐴 × {𝐶}) ⊆ 𝐵) | |
7 | imass2 5937 | . . . . . . 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 3941 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → dom (𝐴 × {𝐶}) ⊆ (◡(𝐴 × {𝐶}) “ 𝐵)) |
10 | 2, 9 | eqssd 3909 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = dom (𝐴 × {𝐶})) |
11 | fconstg 6551 | . . . . . 6 ⊢ (𝐶 ∈ ℝ → (𝐴 × {𝐶}):𝐴⟶{𝐶}) | |
12 | 11 | ad2antlr 726 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶{𝐶}) |
13 | 12 | fdmd 6508 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → dom (𝐴 × {𝐶}) = 𝐴) |
14 | 10, 13 | eqtrd 2793 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = 𝐴) |
15 | simpll 766 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → 𝐴 ∈ dom vol) | |
16 | 14, 15 | eqeltrd 2852 | . 2 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
17 | 11 | ad2antlr 726 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (𝐴 × {𝐶}):𝐴⟶{𝐶}) |
18 | incom 4106 | . . . . 5 ⊢ ({𝐶} ∩ 𝐵) = (𝐵 ∩ {𝐶}) | |
19 | simpr 488 | . . . . . 6 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → ¬ 𝐶 ∈ 𝐵) | |
20 | disjsn 4604 | . . . . . 6 ⊢ ((𝐵 ∩ {𝐶}) = ∅ ↔ ¬ 𝐶 ∈ 𝐵) | |
21 | 19, 20 | sylibr 237 | . . . . 5 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (𝐵 ∩ {𝐶}) = ∅) |
22 | 18, 21 | syl5eq 2805 | . . . 4 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → ({𝐶} ∩ 𝐵) = ∅) |
23 | fimacnvdisj 6542 | . . . 4 ⊢ (((𝐴 × {𝐶}):𝐴⟶{𝐶} ∧ ({𝐶} ∩ 𝐵) = ∅) → (◡(𝐴 × {𝐶}) “ 𝐵) = ∅) | |
24 | 17, 22, 23 | syl2anc 587 | . . 3 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) = ∅) |
25 | 0mbl 24239 | . . 3 ⊢ ∅ ∈ dom vol | |
26 | 24, 25 | eqeltrdi 2860 | . 2 ⊢ (((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) ∧ ¬ 𝐶 ∈ 𝐵) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
27 | 16, 26 | pm2.61dan 812 | 1 ⊢ ((𝐴 ∈ dom vol ∧ 𝐶 ∈ ℝ) → (◡(𝐴 × {𝐶}) “ 𝐵) ∈ dom vol) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∩ cin 3857 ⊆ wss 3858 ∅c0 4225 {csn 4522 × cxp 5522 ◡ccnv 5523 dom cdm 5524 ran crn 5525 “ cima 5527 ⟶wf 6331 ℝcr 10574 volcvol 24163 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-rep 5156 ax-sep 5169 ax-nul 5176 ax-pow 5234 ax-pr 5298 ax-un 7459 ax-inf2 9137 ax-cnex 10631 ax-resscn 10632 ax-1cn 10633 ax-icn 10634 ax-addcl 10635 ax-addrcl 10636 ax-mulcl 10637 ax-mulrcl 10638 ax-mulcom 10639 ax-addass 10640 ax-mulass 10641 ax-distr 10642 ax-i2m1 10643 ax-1ne0 10644 ax-1rid 10645 ax-rnegex 10646 ax-rrecex 10647 ax-cnre 10648 ax-pre-lttri 10649 ax-pre-lttrn 10650 ax-pre-ltadd 10651 ax-pre-mulgt0 10652 ax-pre-sup 10653 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3697 df-csb 3806 df-dif 3861 df-un 3863 df-in 3865 df-ss 3875 df-pss 3877 df-nul 4226 df-if 4421 df-pw 4496 df-sn 4523 df-pr 4525 df-tp 4527 df-op 4529 df-uni 4799 df-int 4839 df-iun 4885 df-br 5033 df-opab 5095 df-mpt 5113 df-tr 5139 df-id 5430 df-eprel 5435 df-po 5443 df-so 5444 df-fr 5483 df-se 5484 df-we 5485 df-xp 5530 df-rel 5531 df-cnv 5532 df-co 5533 df-dm 5534 df-rn 5535 df-res 5536 df-ima 5537 df-pred 6126 df-ord 6172 df-on 6173 df-lim 6174 df-suc 6175 df-iota 6294 df-fun 6337 df-fn 6338 df-f 6339 df-f1 6340 df-fo 6341 df-f1o 6342 df-fv 6343 df-isom 6344 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-of 7405 df-om 7580 df-1st 7693 df-2nd 7694 df-wrecs 7957 df-recs 8018 df-rdg 8056 df-1o 8112 df-2o 8113 df-er 8299 df-map 8418 df-en 8528 df-dom 8529 df-sdom 8530 df-fin 8531 df-sup 8939 df-inf 8940 df-oi 9007 df-dju 9363 df-card 9401 df-pnf 10715 df-mnf 10716 df-xr 10717 df-ltxr 10718 df-le 10719 df-sub 10910 df-neg 10911 df-div 11336 df-nn 11675 df-2 11737 df-3 11738 df-n0 11935 df-z 12021 df-uz 12283 df-q 12389 df-rp 12431 df-xadd 12549 df-ioo 12783 df-ico 12785 df-icc 12786 df-fz 12940 df-fzo 13083 df-fl 13211 df-seq 13419 df-exp 13480 df-hash 13741 df-cj 14506 df-re 14507 df-im 14508 df-sqrt 14642 df-abs 14643 df-clim 14893 df-sum 15091 df-xmet 20159 df-met 20160 df-ovol 24164 df-vol 24165 |
This theorem is referenced by: ismbf 24328 mbfconst 24333 |
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