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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 6247 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4009 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2146 Vcvv 3453 ⊆ wss 3899 ↦ cmpt 5188 dom cdm 5654 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-pr 5394 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-rab 3416 df-v 3455 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-sn 4588 df-pr 4590 df-op 4838 df-br 5106 df-opab 5170 df-mpt 5189 df-xp 5660 df-rel 5661 df-cnv 5662 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 |
| This theorem is used by: mptrcl 7011 fvmptss 7014 fvmptex 7016 fvmptnf 7024 elfvmptrab1w 7029 elfvmptrab1 7030 mptexg 7234 mptexw 7972 dmmpossx 8085 tposssxp 8258 mptfi 9351 cnvimamptfin 9353 cantnfres 9688 mptct 10632 arwrcl 18231 submgmrcl 18896 cntzrcl 19553 gsumconst 20160 psrass1lem 22253 psrass1 22283 psrass23l 22286 psrcom 22287 psrass23 22288 mpfrcl 22406 psropprmul 22567 coe1mul2 22600 lmrcl 23561 1stcrestlem 23782 ptbasfi 23912 isxms2 24779 setsmstopn 24809 tngtopn 24981 rrxmval 25738 ulmss 26736 dchrrcl 27579 gsummpt2co 33662 locfinreflem 34525 sitgclg 35027 cvmsrcl 36150 snmlval 36217 gonan0 36278 bj-fvmptunsn1 38318 eldiophb 43908 elmnc 44278 itgocn 44306 tannpoly 48079 dmmpossx2 49588 dmtposss 50128 |
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