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| Mirrors > Home > MPE Home > Th. List > Mathboxes > aprilfools2025 | Structured version Visualization version GIF version | ||
| Description: An abuse of notation. (Contributed by Prof. Loof Lirpa, 1-Apr-2025.) (New usage is discouraged.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| aprilfools2025 | ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | s4cli 14824 | . 2 ⊢ 〈“〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑔𝑖𝑣𝑒”〉〈“𝑦𝑜𝑢”〉〈“𝑢𝑝”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑙𝑒𝑡”〉〈“𝑦𝑜𝑢”〉〈“𝑑𝑜𝑤𝑛”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑡𝑢𝑟𝑛”〉〈“𝑎𝑟𝑜𝑢𝑛𝑑”〉〈“𝑎𝑛𝑑”〉”〉〈“〈“𝑑𝑒𝑠𝑒𝑟𝑡”〉〈“𝑦𝑜𝑢!”〉”〉”〉 ∈ Word V | |
| 2 | prex 5387 | . 2 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V | |
| 3 | 1, 2 | iddii 42625 | 1 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2109 Vcvv 3444 {cpr 4587 !cfa 14214 Word cword 14454 〈“cs2 14783 〈“cs3 14784 〈“cs4 14785 〈“cs5 14786 〈“cs6 14787 |
| 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 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| 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 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-int 4907 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-1st 7947 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-card 9868 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-nn 12163 df-n0 12419 df-z 12506 df-uz 12770 df-fz 13445 df-fzo 13592 df-hash 14272 df-word 14455 df-concat 14512 df-s1 14537 df-s2 14790 df-s3 14791 df-s4 14792 |
| This theorem is referenced by: (None) |
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