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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 6236 | . 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 3450 ⊆ wss 3899 ↦ cmpt 5186 dom cdm 5655 |
| 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 2732 ax-sep 5251 ax-pr 5398 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-rab 3413 df-v 3452 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 5661 df-rel 5662 df-cnv 5663 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 |
| This theorem is used by: mptrcl 6997 fvmptss 7000 fvmptex 7002 fvmptnf 7010 elfvmptrab1w 7015 elfvmptrab1 7016 mptexg 7221 mptexw 7951 dmmpossx 8064 tposssxp 8229 mptfi 9321 cnvimamptfin 9323 cantnfres 9659 mptct 10549 arwrcl 18136 submgmrcl 18800 cntzrcl 19457 gsumconst 20064 psrass1lem 22151 psrass1 22181 psrass23l 22184 psrcom 22185 psrass23 22186 mpfrcl 22304 psropprmul 22465 coe1mul2 22498 lmrcl 23459 1stcrestlem 23680 ptbasfi 23810 isxms2 24677 setsmstopn 24707 tngtopn 24879 rrxmval 25636 ulmss 26636 dchrrcl 27479 gsummpt2co 33491 locfinreflem 34353 sitgclg 34856 cvmsrcl 35846 snmlval 35913 gonan0 35974 bj-fvmptunsn1 38012 eldiophb 43605 elmnc 43980 itgocn 44008 tannpoly 47761 dmmpossx2 49270 dmtposss 49805 |
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