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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 6243 | . 2 ⊢ dom 𝐴 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} |
| 3 | dmmptd.c | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) | |
| 4 | 3 | elexd 3480 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ V) |
| 5 | 4 | ralrimiva 3159 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 𝐶 ∈ V) |
| 6 | rabid2 3451 | . . 3 ⊢ (𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V} ↔ ∀𝑥 ∈ 𝐵 𝐶 ∈ V) | |
| 7 | 5, 6 | sylibr 237 | . 2 ⊢ (𝜑 → 𝐵 = {𝑥 ∈ 𝐵 ∣ 𝐶 ∈ V}) |
| 8 | 2, 7 | eqtr4id 2819 | 1 ⊢ (𝜑 → dom 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 ∀wral 3081 {crab 3418 Vcvv 3457 ↦ cmpt 5194 dom cdm 5663 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-pr 5406 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3082 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-br 5112 df-opab 5176 df-mpt 5195 df-xp 5669 df-rel 5670 df-cnv 5671 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 |
| This theorem is used by: lo1eq 15645 rlimeq 15646 rlimcld2 15655 rlimcn3 15667 rlimmptrcl 15685 rlimsqzlem 15726 dprdz 20148 alexsublem 24254 cmetcaulem 25500 minveclem3b 25640 mbfneg 25862 mbfsup 25876 mbfinf 25877 mbflimsup 25878 itg2monolem1 25962 itg2mono 25965 itg2i1fseq2 25968 itg2cnlem1 25973 isibl2 25978 iblcnlem 26001 limccnp2 26104 limcco 26105 dvmptres3 26168 itgsubstlem 26260 iblulm 26623 rlimcnp2 27184 dchrisumlema 27705 htthlem 31342 qusrn 33784 esplyfvaln 34030 extdgfialglem1 34148 algextdeglem4 34176 dmqmap 39162 expgrowth 45105 mptelpm 45954 choicefi 45977 mullimc 46392 limcmptdm 46409 dvsinax 46687 dirkercncflem2 46878 fourierdlem62 46942 psmeasure 47245 ovnovollem2 47431 smfmbfcex 47534 smflimsuplem2 47595 |
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