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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 6201 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4041 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 Vcvv 3444 ⊆ wss 3911 ↦ cmpt 5183 dom cdm 5631 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pr 5382 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-rab 3403 df-v 3446 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-sn 4586 df-pr 4588 df-op 4592 df-br 5103 df-opab 5165 df-mpt 5184 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 6959 fvmptss 6962 fvmptex 6964 fvmptnf 6972 elfvmptrab1w 6977 elfvmptrab1 6978 mptexg 7177 mptexw 7911 dmmpossx 8024 tposssxp 8186 mptfi 9278 cnvimamptfin 9280 cantnfres 9606 mptct 10467 arwrcl 17982 submgmrcl 18598 cntzrcl 19235 gsumconst 19840 psrass1lem 21817 psrass1 21849 psrass23l 21852 psrcom 21853 psrass23 21854 mpfrcl 21968 psropprmul 22098 coe1mul2 22131 lmrcl 23094 1stcrestlem 23315 ptbasfi 23444 isxms2 24312 setsmstopn 24342 tngtopn 24514 rrxmval 25281 ulmss 26282 dchrrcl 27127 gsummpt2co 32961 locfinreflem 33803 sitgclg 34306 cvmsrcl 35224 snmlval 35291 gonan0 35352 bj-fvmptunsn1 37218 eldiophb 42718 elmnc 43098 itgocn 43126 tannpoly 46864 dmmpossx2 48298 dmtposss 48837 |
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