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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 6212 | . 2 ⊢ dom 𝐴 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} |
| 3 | dmmptd.c | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) | |
| 4 | 3 | elexd 3467 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ V) |
| 5 | 4 | ralrimiva 3144 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 𝐶 ∈ V) |
| 6 | rabid2 3437 | . . 3 ⊢ (𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} ↔ ∀𝑥 ∈ 𝐵 𝐶 ∈ V) | |
| 7 | 5, 6 | sylibr 236 | . 2 ⊢ (𝜑 → 𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V}) |
| 8 | 2, 7 | eqtr4id 2806 | 1 ⊢ (𝜑 → dom 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 398 = wceq 1550 ∈ wcel 2132 ∀wral 3066 {crab 3404 Vcvv 3444 ↦ cmpt 5171 dom cdm 5636 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-sep 5236 ax-pr 5380 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ral 3067 df-rab 3405 df-v 3446 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-nul 4277 df-if 4471 df-sn 4573 df-pr 4575 df-op 4579 df-br 5091 df-opab 5153 df-mpt 5172 df-xp 5642 df-rel 5643 df-cnv 5644 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 |
| This theorem is referenced by: lo1eq 15567 rlimeq 15568 rlimcld2 15577 rlimcn3 15589 rlimmptrcl 15607 rlimsqzlem 15648 dprdz 20044 alexsublem 24073 cmetcaulem 25319 minveclem3b 25459 mbfneg 25681 mbfsup 25695 mbfinf 25696 mbflimsup 25697 itg2monolem1 25781 itg2mono 25784 itg2i1fseq2 25787 itg2cnlem1 25792 isibl2 25797 iblcnlem 25820 limccnp2 25923 limcco 25924 dvmptres3 25987 itgsubstlem 26079 iblulm 26436 rlimcnp2 26997 dchrisumlema 27518 htthlem 31055 qusrn 33541 esplyfvaln 33815 extdgfialglem1 33933 algextdeglem4 33961 dmqmap 38890 expgrowth 44849 mptelpm 45692 choicefi 45715 mullimc 46130 limcmptdm 46147 dvsinax 46425 dirkercncflem2 46616 fourierdlem62 46680 psmeasure 46983 ovnovollem2 47169 smfmbfcex 47272 smflimsuplem2 47333 |
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