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| Mirrors > Home > MPE Home > Th. List > dmmptss | Structured version Visualization version GIF version | ||
| Description: The domain of a mapping is a subset of its base class. (Contributed by Scott Fenton, 17-Jun-2013.) |
| Ref | Expression |
|---|---|
| dmmpt.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| Ref | Expression |
|---|---|
| dmmptss | ⊢ dom 𝐹 ⊆ 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6204 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4022 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 Vcvv 3429 ⊆ wss 3889 ↦ cmpt 5166 dom cdm 5631 |
| 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 2708 ax-sep 5231 ax-pr 5375 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-br 5086 df-opab 5148 df-mpt 5167 df-xp 5637 df-rel 5638 df-cnv 5639 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 |
| This theorem is referenced by: mptrcl 6957 fvmptss 6960 fvmptex 6962 fvmptnf 6970 elfvmptrab1w 6975 elfvmptrab1 6976 mptexg 7176 mptexw 7906 dmmpossx 8019 tposssxp 8180 mptfi 9261 cnvimamptfin 9263 cantnfres 9598 mptct 10460 arwrcl 18011 submgmrcl 18663 cntzrcl 19302 gsumconst 19909 psrass1lem 21912 psrass1 21942 psrass23l 21945 psrcom 21946 psrass23 21947 mpfrcl 22063 psropprmul 22201 coe1mul2 22234 lmrcl 23196 1stcrestlem 23417 ptbasfi 23546 isxms2 24413 setsmstopn 24443 tngtopn 24615 rrxmval 25372 ulmss 26362 dchrrcl 27203 gsummpt2co 33109 locfinreflem 33984 sitgclg 34486 cvmsrcl 35446 snmlval 35513 gonan0 35574 bj-fvmptunsn1 37571 eldiophb 43189 elmnc 43564 itgocn 43592 tannpoly 47338 dmmpossx2 48813 dmtposss 49351 |
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