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Mirrors > Home > MPE Home > Th. List > suppval1 | Structured version Visualization version GIF version |
Description: The value of the operation constructing the support of a function. (Contributed by AV, 6-Apr-2019.) |
Ref | Expression |
---|---|
suppval1 | ⊢ ((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑋 supp 𝑍) = {𝑖 ∈ dom 𝑋 ∣ (𝑋‘𝑖) ≠ 𝑍}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | suppval 7979 | . . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑋 supp 𝑍) = {𝑖 ∈ dom 𝑋 ∣ (𝑋 “ {𝑖}) ≠ {𝑍}}) | |
2 | 1 | 3adant1 1129 | . 2 ⊢ ((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑋 supp 𝑍) = {𝑖 ∈ dom 𝑋 ∣ (𝑋 “ {𝑖}) ≠ {𝑍}}) |
3 | funfn 6464 | . . . . . . . . 9 ⊢ (Fun 𝑋 ↔ 𝑋 Fn dom 𝑋) | |
4 | 3 | biimpi 215 | . . . . . . . 8 ⊢ (Fun 𝑋 → 𝑋 Fn dom 𝑋) |
5 | 4 | 3ad2ant1 1132 | . . . . . . 7 ⊢ ((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → 𝑋 Fn dom 𝑋) |
6 | fnsnfv 6847 | . . . . . . 7 ⊢ ((𝑋 Fn dom 𝑋 ∧ 𝑖 ∈ dom 𝑋) → {(𝑋‘𝑖)} = (𝑋 “ {𝑖})) | |
7 | 5, 6 | sylan 580 | . . . . . 6 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → {(𝑋‘𝑖)} = (𝑋 “ {𝑖})) |
8 | 7 | eqcomd 2744 | . . . . 5 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → (𝑋 “ {𝑖}) = {(𝑋‘𝑖)}) |
9 | 8 | neeq1d 3003 | . . . 4 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → ((𝑋 “ {𝑖}) ≠ {𝑍} ↔ {(𝑋‘𝑖)} ≠ {𝑍})) |
10 | fvex 6787 | . . . . . 6 ⊢ (𝑋‘𝑖) ∈ V | |
11 | sneqbg 4774 | . . . . . 6 ⊢ ((𝑋‘𝑖) ∈ V → ({(𝑋‘𝑖)} = {𝑍} ↔ (𝑋‘𝑖) = 𝑍)) | |
12 | 10, 11 | mp1i 13 | . . . . 5 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → ({(𝑋‘𝑖)} = {𝑍} ↔ (𝑋‘𝑖) = 𝑍)) |
13 | 12 | necon3bid 2988 | . . . 4 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → ({(𝑋‘𝑖)} ≠ {𝑍} ↔ (𝑋‘𝑖) ≠ 𝑍)) |
14 | 9, 13 | bitrd 278 | . . 3 ⊢ (((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) ∧ 𝑖 ∈ dom 𝑋) → ((𝑋 “ {𝑖}) ≠ {𝑍} ↔ (𝑋‘𝑖) ≠ 𝑍)) |
15 | 14 | rabbidva 3413 | . 2 ⊢ ((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → {𝑖 ∈ dom 𝑋 ∣ (𝑋 “ {𝑖}) ≠ {𝑍}} = {𝑖 ∈ dom 𝑋 ∣ (𝑋‘𝑖) ≠ 𝑍}) |
16 | 2, 15 | eqtrd 2778 | 1 ⊢ ((Fun 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑋 supp 𝑍) = {𝑖 ∈ dom 𝑋 ∣ (𝑋‘𝑖) ≠ 𝑍}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 {crab 3068 Vcvv 3432 {csn 4561 dom cdm 5589 “ cima 5592 Fun wfun 6427 Fn wfn 6428 ‘cfv 6433 (class class class)co 7275 supp csupp 7977 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-sbc 3717 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-supp 7978 |
This theorem is referenced by: suppvalfng 7984 suppvalfn 7985 suppfnss 8005 fnsuppres 8007 rmfsupp2 31492 domnmsuppn0 45705 rmsuppss 45706 mndpsuppss 45707 scmsuppss 45708 suppdm 45851 |
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