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Mirrors > Home > MPE Home > Th. List > setsval | Structured version Visualization version GIF version |
Description: Value of the structure replacement function. (Contributed by Mario Carneiro, 1-Dec-2014.) (Revised by Mario Carneiro, 30-Apr-2015.) |
Ref | Expression |
---|---|
setsval | ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝑆 sSet 〈𝐴, 𝐵〉) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opex 4932 | . . 3 ⊢ 〈𝐴, 𝐵〉 ∈ V | |
2 | setsvalg 15887 | . . 3 ⊢ ((𝑆 ∈ 𝑉 ∧ 〈𝐴, 𝐵〉 ∈ V) → (𝑆 sSet 〈𝐴, 𝐵〉) = ((𝑆 ↾ (V ∖ dom {〈𝐴, 𝐵〉})) ∪ {〈𝐴, 𝐵〉})) | |
3 | 1, 2 | mpan2 707 | . 2 ⊢ (𝑆 ∈ 𝑉 → (𝑆 sSet 〈𝐴, 𝐵〉) = ((𝑆 ↾ (V ∖ dom {〈𝐴, 𝐵〉})) ∪ {〈𝐴, 𝐵〉})) |
4 | dmsnopg 5606 | . . . . 5 ⊢ (𝐵 ∈ 𝑊 → dom {〈𝐴, 𝐵〉} = {𝐴}) | |
5 | 4 | difeq2d 3728 | . . . 4 ⊢ (𝐵 ∈ 𝑊 → (V ∖ dom {〈𝐴, 𝐵〉}) = (V ∖ {𝐴})) |
6 | 5 | reseq2d 5396 | . . 3 ⊢ (𝐵 ∈ 𝑊 → (𝑆 ↾ (V ∖ dom {〈𝐴, 𝐵〉})) = (𝑆 ↾ (V ∖ {𝐴}))) |
7 | 6 | uneq1d 3766 | . 2 ⊢ (𝐵 ∈ 𝑊 → ((𝑆 ↾ (V ∖ dom {〈𝐴, 𝐵〉})) ∪ {〈𝐴, 𝐵〉}) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉})) |
8 | 3, 7 | sylan9eq 2676 | 1 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝑆 sSet 〈𝐴, 𝐵〉) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 = wceq 1483 ∈ wcel 1990 Vcvv 3200 ∖ cdif 3571 ∪ cun 3572 {csn 4177 〈cop 4183 dom cdm 5114 ↾ cres 5116 (class class class)co 6650 sSet csts 15855 |
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-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 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-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-res 5126 df-iota 5851 df-fun 5890 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-sets 15864 |
This theorem is referenced by: setsidvald 15889 fvsetsid 15890 fsets 15891 setsabs 15902 setscom 15903 setsid 15914 estrres 16779 setsidel 41346 setsnidel 41347 setsv 41348 |
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