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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 14789 | . 2 ⊢ 〈“〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑔𝑖𝑣𝑒”〉〈“𝑦𝑜𝑢”〉〈“𝑢𝑝”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑙𝑒𝑡”〉〈“𝑦𝑜𝑢”〉〈“𝑑𝑜𝑤𝑛”〉”〉〈“〈“𝑁𝑒𝑣𝑒𝑟”〉〈“𝑔𝑜𝑛𝑛𝑎”〉〈“𝑡𝑢𝑟𝑛”〉〈“𝑎𝑟𝑜𝑢𝑛𝑑”〉〈“𝑎𝑛𝑑”〉”〉〈“〈“𝑑𝑒𝑠𝑒𝑟𝑡”〉〈“𝑦𝑜𝑢!”〉”〉”〉 ∈ Word V | |
| 2 | prex 5373 | . 2 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V | |
| 3 | 1, 2 | iddii 42767 | 1 ⊢ {〈“𝐴𝑝𝑟𝑖𝑙”〉, 〈“𝑓𝑜𝑜𝑙𝑠!”〉} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2111 Vcvv 3436 {cpr 4575 !cfa 14180 Word cword 14420 〈“cs2 14748 〈“cs3 14749 〈“cs4 14750 〈“cs5 14751 〈“cs6 14752 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 ax-cnex 11062 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 ax-pre-mulgt0 11083 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-1st 7921 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-er 8622 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-card 9832 df-pnf 11148 df-mnf 11149 df-xr 11150 df-ltxr 11151 df-le 11152 df-sub 11346 df-neg 11347 df-nn 12126 df-n0 12382 df-z 12469 df-uz 12733 df-fz 13408 df-fzo 13555 df-hash 14238 df-word 14421 df-concat 14478 df-s1 14504 df-s2 14755 df-s3 14756 df-s4 14757 |
| This theorem is referenced by: (None) |
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