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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 6199 | . 2 ⊢ dom 𝐴 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} |
| 3 | dmmptd.c | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) | |
| 4 | 3 | elexd 3454 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ V) |
| 5 | 4 | ralrimiva 3130 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 𝐶 ∈ V) |
| 6 | rabid2 3423 | . . 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 2791 | 1 ⊢ (𝜑 → dom 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∀wral 3052 {crab 3390 Vcvv 3430 ↦ cmpt 5167 dom cdm 5625 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-pr 5371 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-mpt 5168 df-xp 5631 df-rel 5632 df-cnv 5633 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 |
| This theorem is referenced by: lo1eq 15524 rlimeq 15525 rlimcld2 15534 rlimcn3 15546 rlimmptrcl 15564 rlimsqzlem 15605 dprdz 20001 alexsublem 24022 cmetcaulem 25268 minveclem3b 25408 mbfneg 25630 mbfsup 25644 mbfinf 25645 mbflimsup 25646 itg2monolem1 25730 itg2mono 25733 itg2i1fseq2 25736 itg2cnlem1 25741 isibl2 25746 iblcnlem 25769 limccnp2 25872 limcco 25873 dvmptres3 25936 itgsubstlem 26028 iblulm 26388 rlimcnp2 26946 dchrisumlema 27468 htthlem 31006 qusrn 33487 esplyfvaln 33736 extdgfialglem1 33855 algextdeglem4 33883 dmqmap 38791 expgrowth 44783 mptelpm 45627 choicefi 45650 mullimc 46067 limcmptdm 46084 dvsinax 46362 dirkercncflem2 46553 fourierdlem62 46617 psmeasure 46920 ovnovollem2 47106 smfmbfcex 47209 smflimsuplem2 47270 |
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