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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 14903 | . 2 ⊢ 〈“〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑔𝑖𝑣𝑒”〉〈“𝑦𝑜𝑢”〉〈“𝑢𝑝”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑙𝑒𝑡”〉〈“𝑦𝑜𝑢”〉〈“𝑑𝑜𝑤𝑛”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑡𝑢𝑟𝑛”〉〈“𝑎𝑟𝑜𝑢𝑛𝑑”〉〈“𝑎𝑛𝑑”〉”〉〈“〈“𝑑𝑒𝑠𝑒𝑟𝑡”〉〈“𝑦𝑜𝑢!”〉”〉”〉 ∈ Word V | |
| 2 | prex 5417 | . 2 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V | |
| 3 | 1, 2 | iddii 42637 | 1 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2107 Vcvv 3463 {cpr 4608 !cfa 14294 Word cword 14534 〈“cs2 14862 〈“cs3 14863 〈“cs4 14864 〈“cs5 14865 〈“cs6 14866 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-rep 5259 ax-sep 5276 ax-nul 5286 ax-pow 5345 ax-pr 5412 ax-un 7737 ax-cnex 11193 ax-resscn 11194 ax-1cn 11195 ax-icn 11196 ax-addcl 11197 ax-addrcl 11198 ax-mulcl 11199 ax-mulrcl 11200 ax-mulcom 11201 ax-addass 11202 ax-mulass 11203 ax-distr 11204 ax-i2m1 11205 ax-1ne0 11206 ax-1rid 11207 ax-rnegex 11208 ax-rrecex 11209 ax-cnre 11210 ax-pre-lttri 11211 ax-pre-lttrn 11212 ax-pre-ltadd 11213 ax-pre-mulgt0 11214 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3364 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4888 df-int 4927 df-iun 4973 df-br 5124 df-opab 5186 df-mpt 5206 df-tr 5240 df-id 5558 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6301 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7870 df-1st 7996 df-2nd 7997 df-frecs 8288 df-wrecs 8319 df-recs 8393 df-rdg 8432 df-1o 8488 df-er 8727 df-en 8968 df-dom 8969 df-sdom 8970 df-fin 8971 df-card 9961 df-pnf 11279 df-mnf 11280 df-xr 11281 df-ltxr 11282 df-le 11283 df-sub 11476 df-neg 11477 df-nn 12249 df-n0 12510 df-z 12597 df-uz 12861 df-fz 13530 df-fzo 13677 df-hash 14352 df-word 14535 df-concat 14591 df-s1 14616 df-s2 14869 df-s3 14870 df-s4 14871 |
| This theorem is referenced by: (None) |
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