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| Mirrors > Home > MPE Home > Th. List > dmmptd | Structured version Visualization version GIF version | ||
| Description: The domain of the mapping operation, deduction form. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| dmmptd.a | ⊢ 𝐴 = (𝑥 ∈ 𝐵 ↦ 𝐶) |
| dmmptd.c | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| dmmptd | ⊢ (𝜑 → dom 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmmptd.a | . . 3 ⊢ 𝐴 = (𝑥 ∈ 𝐵 ↦ 𝐶) | |
| 2 | 1 | dmmpt 6196 | . 2 ⊢ dom 𝐴 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} |
| 3 | dmmptd.c | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) | |
| 4 | 3 | elexd 3462 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ V) |
| 5 | 4 | ralrimiva 3126 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 𝐶 ∈ V) |
| 6 | rabid2 3430 | . . 3 ⊢ (𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} ↔ ∀𝑥 ∈ 𝐵 𝐶 ∈ V) | |
| 7 | 5, 6 | sylibr 234 | . 2 ⊢ (𝜑 → 𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V}) |
| 8 | 2, 7 | eqtr4id 2788 | 1 ⊢ (𝜑 → dom 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∀wral 3049 {crab 3397 Vcvv 3438 ↦ cmpt 5177 dom cdm 5622 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ral 3050 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-br 5097 df-opab 5159 df-mpt 5178 df-xp 5628 df-rel 5629 df-cnv 5630 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 |
| This theorem is referenced by: lo1eq 15489 rlimeq 15490 rlimcld2 15499 rlimcn3 15511 rlimmptrcl 15529 rlimsqzlem 15570 dprdz 19959 alexsublem 23986 cmetcaulem 25242 minveclem3b 25382 mbfneg 25605 mbfsup 25619 mbfinf 25620 mbflimsup 25621 itg2monolem1 25705 itg2mono 25708 itg2i1fseq2 25711 itg2cnlem1 25716 isibl2 25721 iblcnlem 25744 limccnp2 25847 limcco 25848 dvmptres3 25914 itgsubstlem 26009 iblulm 26370 rlimcnp2 26930 dchrisumlema 27453 htthlem 30941 qusrn 33439 extdgfialglem1 33798 algextdeglem4 33826 expgrowth 44518 mptelpm 45362 choicefi 45386 mullimc 45804 limcmptdm 45821 dvsinax 46099 dirkercncflem2 46290 fourierdlem62 46354 psmeasure 46657 ovnovollem2 46843 smfmbfcex 46946 smflimsuplem2 47007 |
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