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Mirrors > Home > MPE Home > Th. List > ex-fv | Structured version Visualization version GIF version |
Description: Example for df-fv 6583. Example by David A. Wheeler. (Contributed by Mario Carneiro, 7-May-2015.) |
Ref | Expression |
---|---|
ex-fv | ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = 9) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fveq1 6921 | . 2 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = ({〈2, 6〉, 〈3, 9〉}‘3)) | |
2 | 2re 12369 | . . . 4 ⊢ 2 ∈ ℝ | |
3 | 2lt3 12467 | . . . 4 ⊢ 2 < 3 | |
4 | 2, 3 | ltneii 11405 | . . 3 ⊢ 2 ≠ 3 |
5 | 3ex 12377 | . . . 4 ⊢ 3 ∈ V | |
6 | 9re 12394 | . . . . 5 ⊢ 9 ∈ ℝ | |
7 | 6 | elexi 3511 | . . . 4 ⊢ 9 ∈ V |
8 | 5, 7 | fvpr2 7231 | . . 3 ⊢ (2 ≠ 3 → ({〈2, 6〉, 〈3, 9〉}‘3) = 9) |
9 | 4, 8 | ax-mp 5 | . 2 ⊢ ({〈2, 6〉, 〈3, 9〉}‘3) = 9 |
10 | 1, 9 | eqtrdi 2796 | 1 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = 9) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ≠ wne 2946 {cpr 4650 〈cop 4654 ‘cfv 6575 ℝcr 11185 2c2 12350 3c3 12351 6c6 12354 9c9 12357 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7772 ax-resscn 11243 ax-1cn 11244 ax-icn 11245 ax-addcl 11246 ax-addrcl 11247 ax-mulcl 11248 ax-mulrcl 11249 ax-mulcom 11250 ax-addass 11251 ax-mulass 11252 ax-distr 11253 ax-i2m1 11254 ax-1ne0 11255 ax-1rid 11256 ax-rnegex 11257 ax-rrecex 11258 ax-cnre 11259 ax-pre-lttri 11260 ax-pre-lttrn 11261 ax-pre-ltadd 11262 ax-pre-mulgt0 11263 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-po 5607 df-so 5608 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6527 df-fun 6577 df-fn 6578 df-f 6579 df-f1 6580 df-fo 6581 df-f1o 6582 df-fv 6583 df-riota 7406 df-ov 7453 df-oprab 7454 df-mpo 7455 df-er 8765 df-en 9006 df-dom 9007 df-sdom 9008 df-pnf 11328 df-mnf 11329 df-xr 11330 df-ltxr 11331 df-le 11332 df-sub 11524 df-neg 11525 df-2 12358 df-3 12359 df-4 12360 df-5 12361 df-6 12362 df-7 12363 df-8 12364 df-9 12365 |
This theorem is referenced by: (None) |
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