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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 1544 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 231 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1539 = wceq 1541 ⊤wtru 1542 |
| 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 207 df-tru 1544 |
| This theorem is referenced by: dftru2 1546 trut 1547 mptru 1548 tbtru 1549 bitru 1550 trud 1551 truan 1552 fal 1555 truorfal 1579 falortru 1580 cadtru 1621 nftru 1805 altru 1808 extru 1976 sbtru 2072 vextru 2719 rextru 3065 rabtru 3642 ss2abi 4016 disjprg 5092 reusv2lem5 5345 rabxfr 5361 reuhyp 5363 euotd 5459 mptexgf 7166 elabrex 7186 elabrexg 7187 caovcl 7550 caovass 7556 caovdi 7575 ectocl 8718 fin1a2lem10 10317 riotaneg 12119 zriotaneg 12603 eflt 16040 efgi0 19647 efgi1 19648 0frgp 19706 mpomulcn 24812 iundisj2 25504 pige3ALT 26483 tanord1 26500 tanord 26501 logtayl 26623 n0sind 28293 nnsind 28331 iundisj2f 32614 iundisj2fi 32826 ordtconn 34031 tgoldbachgt 34769 nexntru 36547 bj-fal 36713 bj-axd2d 36736 bj-rabtr 37074 bj-rabtrALT 37075 bj-dfid2ALT 37209 bj-finsumval0 37429 wl-impchain-mp-x 37591 wl-impchain-com-1.x 37595 wl-impchain-com-n.m 37600 wl-impchain-a1-x 37604 wl-moteq 37658 ftc1anclem5 37837 lhpexle1 40207 3lexlogpow5ineq2 42248 3lexlogpow2ineq1 42251 3lexlogpow2ineq2 42252 mzpcompact2lem 42935 ifpdfor 43648 ifpim1 43652 ifpnot 43653 ifpid2 43654 ifpim2 43655 uun0.1 44960 uunT1 44962 un10 44970 un01 44971 dfbi1ALTa 45122 simprimi 45123 n0abso 45159 liminfvalxr 45969 ovn02 46754 rmotru 48990 reutru 48991 |
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