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| Mirrors > Home > MPE Home > Th. List > tru | Structured version Visualization version GIF version | ||
| Description: The truth value ⊤ is provable. (Contributed by Anthony Hart, 13-Oct-2010.) |
| Ref | Expression |
|---|---|
| tru | ⊢ ⊤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 22 | . 2 ⊢ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥) | |
| 2 | df-tru 1550 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 232 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1545 = wceq 1547 ⊤wtru 1548 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This theorem depends on definitions: df-bi 208 df-tru 1550 |
| This theorem is referenced by: dftru2 1552 trut 1553 mptru 1554 tbtru 1555 bitru 1556 trud 1557 truan 1558 fal 1561 truorfal 1585 falortru 1586 cadtru 1627 nftru 1811 altru 1814 extru 1982 sbtru 2078 vextru 2724 rextru 3070 rabtru 3627 disjprg 5068 reusv2lem5 5331 rabxfr 5347 reuhyp 5349 euotd 5454 mptexgf 7166 elabrex 7186 elabrexg 7187 caovcl 7550 caovass 7556 caovdi 7575 ectocl 8720 fin1a2lem10 10322 riotaneg 12126 zriotaneg 12633 eflt 16075 efgi0 19686 efgi1 19687 0frgp 19745 mpomulcn 24852 iundisj2 25534 pige3ALT 26502 tanord1 26519 tanord 26520 logtayl 26642 n0sind 28343 nnsind 28383 iundisj2f 32679 iundisj2fi 32889 ordtconn 34109 tgoldbachgt 34847 nexntru 36632 bj-fal 36879 bj-axd2d 36904 bj-rabtr 37283 bj-rabtrALT 37284 bj-dfid2ALT 37418 bj-finsumval0 37645 wl-impchain-mp-x 37809 wl-impchain-com-1.x 37813 wl-impchain-com-n.m 37818 wl-impchain-a1-x 37822 wl-moteq 37885 ftc1anclem5 38064 lhpexle1 40500 3lexlogpow5ineq2 42540 3lexlogpow2ineq1 42543 3lexlogpow2ineq2 42544 mzpcompact2lem 43200 ifpdfor 43909 ifpim1 43913 ifpnot 43914 ifpid2 43915 ifpim2 43916 uun0.1 45221 uunT1 45223 un10 45231 un01 45232 dfbi1ALTa 45383 simprimi 45384 n0abso 45420 liminfvalxr 46226 ovn02 47011 rmotru 49293 reutru 49294 |
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