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| Mirrors > Home > MPE Home > Th. List > ex-fv | Structured version Visualization version GIF version | ||
| Description: Example for df-fv 6545. 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 6881 | . 2 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = ({〈2, 6〉, 〈3, 9〉}‘3)) | |
| 2 | 2re 12314 | . . . 4 ⊢ 2 ∈ ℝ | |
| 3 | 2lt3 12413 | . . . 4 ⊢ 2 < 3 | |
| 4 | 2, 3 | ltneii 11322 | . . 3 ⊢ 2 ≠ 3 |
| 5 | 3ex 12322 | . . . 4 ⊢ 3 ∈ V | |
| 6 | 9re 12339 | . . . . 5 ⊢ 9 ∈ ℝ | |
| 7 | 6 | elexi 3485 | . . . 4 ⊢ 9 ∈ V |
| 8 | 5, 7 | fvpr2 7192 | . . 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 2820 | 1 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = 9) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ≠ wne 2964 {cpr 4596 〈cop 4600 ‘cfv 6537 ℝcr 11098 2c2 12294 3c3 12295 6c6 12298 9c9 12301 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-2 12302 df-3 12303 df-4 12304 df-5 12305 df-6 12306 df-7 12307 df-8 12308 df-9 12309 |
| This theorem is referenced by: (None) |
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