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Mirrors > Home > MPE Home > Th. List > ressbasss | Structured version Visualization version GIF version |
Description: The base set of a restriction is a subset of the base set of the original structure. (Contributed by Stefan O'Rear, 27-Nov-2014.) (Revised by Mario Carneiro, 30-Apr-2015.) |
Ref | Expression |
---|---|
ressbas.r | ⊢ 𝑅 = (𝑊 ↾s 𝐴) |
ressbas.b | ⊢ 𝐵 = (Base‘𝑊) |
Ref | Expression |
---|---|
ressbasss | ⊢ (Base‘𝑅) ⊆ 𝐵 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ressbas.r | . . . 4 ⊢ 𝑅 = (𝑊 ↾s 𝐴) | |
2 | ressbas.b | . . . 4 ⊢ 𝐵 = (Base‘𝑊) | |
3 | 1, 2 | ressbas 15930 | . . 3 ⊢ (𝐴 ∈ V → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
4 | inss2 3834 | . . 3 ⊢ (𝐴 ∩ 𝐵) ⊆ 𝐵 | |
5 | 3, 4 | syl6eqssr 3656 | . 2 ⊢ (𝐴 ∈ V → (Base‘𝑅) ⊆ 𝐵) |
6 | reldmress 15926 | . . . . . 6 ⊢ Rel dom ↾s | |
7 | 6 | ovprc2 6685 | . . . . 5 ⊢ (¬ 𝐴 ∈ V → (𝑊 ↾s 𝐴) = ∅) |
8 | 1, 7 | syl5eq 2668 | . . . 4 ⊢ (¬ 𝐴 ∈ V → 𝑅 = ∅) |
9 | 8 | fveq2d 6195 | . . 3 ⊢ (¬ 𝐴 ∈ V → (Base‘𝑅) = (Base‘∅)) |
10 | base0 15912 | . . . 4 ⊢ ∅ = (Base‘∅) | |
11 | 0ss 3972 | . . . 4 ⊢ ∅ ⊆ 𝐵 | |
12 | 10, 11 | eqsstr3i 3636 | . . 3 ⊢ (Base‘∅) ⊆ 𝐵 |
13 | 9, 12 | syl6eqss 3655 | . 2 ⊢ (¬ 𝐴 ∈ V → (Base‘𝑅) ⊆ 𝐵) |
14 | 5, 13 | pm2.61i 176 | 1 ⊢ (Base‘𝑅) ⊆ 𝐵 |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 = wceq 1483 ∈ wcel 1990 Vcvv 3200 ∩ cin 3573 ⊆ wss 3574 ∅c0 3915 ‘cfv 5888 (class class class)co 6650 Basecbs 15857 ↾s cress 15858 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-i2m1 10004 ax-1ne0 10005 ax-rrecex 10008 ax-cnre 10009 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-nn 11021 df-ndx 15860 df-slot 15861 df-base 15863 df-sets 15864 df-ress 15865 |
This theorem is referenced by: funcres2c 16561 resscatc 16755 submnd0 17320 resscntz 17764 subcmn 18242 resspsrvsca 19418 subrgpsr 19419 ply1bascl 19573 evpmss 19932 frlmplusgval 20107 frlmvscafval 20109 lsslindf 20169 islinds3 20173 ressprdsds 22176 cphsubrglem 22977 |
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