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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 6241 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4030 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 Vcvv 3451 ⊆ wss 3899 ↦ cmpt 5186 dom cdm 5651 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-pr 5391 |
| 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-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-mpt 5187 df-xp 5657 df-rel 5658 df-cnv 5659 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 |
| This theorem is used by: mptrcl 7003 fvmptss 7006 fvmptex 7008 fvmptnf 7016 elfvmptrab1w 7021 elfvmptrab1 7022 mptexg 7227 mptexw 7965 dmmpossx 8077 tposssxp 8247 mptfi 9340 cnvimamptfin 9342 cantnfres 9678 mptct 10622 arwrcl 18219 submgmrcl 18884 cntzrcl 19541 gsumconst 20148 psrass1lem 22241 psrass1 22271 psrass23l 22274 psrcom 22275 psrass23 22276 mpfrcl 22394 psropprmul 22555 coe1mul2 22588 lmrcl 23549 1stcrestlem 23770 ptbasfi 23900 isxms2 24767 setsmstopn 24797 tngtopn 24969 rrxmval 25726 ulmss 26724 dchrrcl 27567 gsummpt2co 33609 locfinreflem 34472 sitgclg 34974 cvmsrcl 36029 snmlval 36096 gonan0 36157 bj-fvmptunsn1 38178 eldiophb 43767 elmnc 44137 itgocn 44165 tannpoly 47939 dmmpossx2 49448 dmtposss 49983 |
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