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| Mirrors > Home > MPE Home > Th. List > ex-fv | Structured version Visualization version GIF version | ||
| Description: Example for df-fv 6527. 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 6864 | . 2 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = ({〈2, 6〉, 〈3, 9〉}‘3)) | |
| 2 | 2re 12271 | . . . 4 ⊢ 2 ∈ ℝ | |
| 3 | 2lt3 12369 | . . . 4 ⊢ 2 < 3 | |
| 4 | 2, 3 | ltneii 11305 | . . 3 ⊢ 2 ≠ 3 |
| 5 | 3ex 12279 | . . . 4 ⊢ 3 ∈ V | |
| 6 | 9re 12296 | . . . . 5 ⊢ 9 ∈ ℝ | |
| 7 | 6 | elexi 3478 | . . . 4 ⊢ 9 ∈ V |
| 8 | 5, 7 | fvpr2 7174 | . . 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 2781 | 1 ⊢ (𝐹 = {〈2, 6〉, 〈3, 9〉} → (𝐹‘3) = 9) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ≠ wne 2927 {cpr 4599 〈cop 4603 ‘cfv 6519 ℝcr 11085 2c2 12252 3c3 12253 6c6 12256 9c9 12259 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5259 ax-nul 5269 ax-pow 5328 ax-pr 5395 ax-un 7718 ax-resscn 11143 ax-1cn 11144 ax-icn 11145 ax-addcl 11146 ax-addrcl 11147 ax-mulcl 11148 ax-mulrcl 11149 ax-mulcom 11150 ax-addass 11151 ax-mulass 11152 ax-distr 11153 ax-i2m1 11154 ax-1ne0 11155 ax-1rid 11156 ax-rnegex 11157 ax-rrecex 11158 ax-cnre 11159 ax-pre-lttri 11160 ax-pre-lttrn 11161 ax-pre-ltadd 11162 ax-pre-mulgt0 11163 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2880 df-ne 2928 df-nel 3032 df-ral 3047 df-rex 3056 df-reu 3358 df-rab 3412 df-v 3457 df-sbc 3762 df-csb 3871 df-dif 3925 df-un 3927 df-in 3929 df-ss 3939 df-nul 4305 df-if 4497 df-pw 4573 df-sn 4598 df-pr 4600 df-op 4604 df-uni 4880 df-br 5116 df-opab 5178 df-mpt 5197 df-id 5541 df-po 5554 df-so 5555 df-xp 5652 df-rel 5653 df-cnv 5654 df-co 5655 df-dm 5656 df-rn 5657 df-res 5658 df-ima 5659 df-iota 6472 df-fun 6521 df-fn 6522 df-f 6523 df-f1 6524 df-fo 6525 df-f1o 6526 df-fv 6527 df-riota 7351 df-ov 7397 df-oprab 7398 df-mpo 7399 df-er 8682 df-en 8923 df-dom 8924 df-sdom 8925 df-pnf 11228 df-mnf 11229 df-xr 11230 df-ltxr 11231 df-le 11232 df-sub 11425 df-neg 11426 df-2 12260 df-3 12261 df-4 12262 df-5 12263 df-6 12264 df-7 12265 df-8 12266 df-9 12267 |
| This theorem is referenced by: (None) |
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