![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > elsuppfn | Structured version Visualization version GIF version |
Description: An element of the support of a function with a given domain. (Contributed by AV, 27-May-2019.) |
Ref | Expression |
---|---|
elsuppfn | ⊢ ((𝐹 Fn 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑆 ∈ (𝐹 supp 𝑍) ↔ (𝑆 ∈ 𝑋 ∧ (𝐹‘𝑆) ≠ 𝑍))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | suppvalfn 7820 | . . 3 ⊢ ((𝐹 Fn 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝐹 supp 𝑍) = {𝑖 ∈ 𝑋 ∣ (𝐹‘𝑖) ≠ 𝑍}) | |
2 | 1 | eleq2d 2875 | . 2 ⊢ ((𝐹 Fn 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑆 ∈ (𝐹 supp 𝑍) ↔ 𝑆 ∈ {𝑖 ∈ 𝑋 ∣ (𝐹‘𝑖) ≠ 𝑍})) |
3 | fveq2 6645 | . . . 4 ⊢ (𝑖 = 𝑆 → (𝐹‘𝑖) = (𝐹‘𝑆)) | |
4 | 3 | neeq1d 3046 | . . 3 ⊢ (𝑖 = 𝑆 → ((𝐹‘𝑖) ≠ 𝑍 ↔ (𝐹‘𝑆) ≠ 𝑍)) |
5 | 4 | elrab 3628 | . 2 ⊢ (𝑆 ∈ {𝑖 ∈ 𝑋 ∣ (𝐹‘𝑖) ≠ 𝑍} ↔ (𝑆 ∈ 𝑋 ∧ (𝐹‘𝑆) ≠ 𝑍)) |
6 | 2, 5 | syl6bb 290 | 1 ⊢ ((𝐹 Fn 𝑋 ∧ 𝑋 ∈ 𝑉 ∧ 𝑍 ∈ 𝑊) → (𝑆 ∈ (𝐹 supp 𝑍) ↔ (𝑆 ∈ 𝑋 ∧ (𝐹‘𝑆) ≠ 𝑍))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 ≠ wne 2987 {crab 3110 Fn wfn 6319 ‘cfv 6324 (class class class)co 7135 supp csupp 7813 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pr 5295 ax-un 7441 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-ral 3111 df-rex 3112 df-reu 3113 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-ov 7138 df-oprab 7139 df-mpo 7140 df-supp 7814 |
This theorem is referenced by: fvn0elsupp 7829 fvn0elsuppb 7830 rexsupp 7831 suppss 7843 suppssr 7844 suppofssd 7850 suppcoss 7854 wemapso2lem 9000 cantnfle 9118 cantnfp1lem2 9126 cantnfp1lem3 9127 cantnfp1 9128 cantnflem1a 9132 cantnflem3 9138 cnfcomlem 9146 cnfcom3 9151 suppssfz 13357 ciclcl 17064 cicrcl 17065 mhpvarcl 20798 mdegleb 24665 fvdifsupp 30444 suppiniseg 30446 ressupprn 30450 fsuppcurry1 30487 fsuppcurry2 30488 fsuppind 39456 finnzfsuppd 40915 mnringmulrcld 40936 fdivmptf 44955 refdivmptf 44956 |
Copyright terms: Public domain | W3C validator |