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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 23 | . 2 ⊢ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥) | |
| 2 | df-tru 1573 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 234 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1568 = wceq 1570 ⊤wtru 1571 |
| 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 210 df-tru 1573 |
| This theorem is referenced by: dftru2 1575 trut 1576 mptru 1577 tbtru 1578 bitru 1579 trud 1580 truan 1581 fal 1584 truorfal 1608 falortru 1609 cadtru 1650 nftru 1834 altru 1837 extru 2005 sbtru 2101 vextru 2748 rextru 3096 rabtru 3648 disjprg 5105 reusv2lem5 5373 rabxfr 5389 reuhyp 5391 euotd 5496 mptexgf 7220 elabrex 7240 elabrexg 7241 caovcl 7604 caovass 7610 caovdi 7629 ectocl 8777 fin1a2lem10 10388 riotaneg 12189 zriotaneg 12704 eflt 16168 efgi0 19785 efgi1 19786 0frgp 19844 mpomulcn 25026 iundisj2 25708 pige3ALT 26685 tanord1 26702 tanord 26703 logtayl 26825 n0sind 28526 nnsind 28566 iundisj2f 32935 iundisj2fi 33142 ordtconn 34315 tgoldbachgt 35050 nexntru 36935 bj-fal 37181 bj-axd2d 37206 bj-rabtr 37586 bj-rabtrALT 37587 bj-dfid2ALT 37721 bj-finsumval0 37949 wl-impchain-mp-x 38113 wl-impchain-com-1.x 38117 wl-impchain-com-n.m 38122 wl-impchain-a1-x 38126 wl-moteq 38189 ftc1anclem5 38368 lhpexle1 40802 3lexlogpow5ineq2 42842 3lexlogpow2ineq1 42845 3lexlogpow2ineq2 42846 mzpcompact2lem 43502 ifpdfor 44211 ifpim1 44215 ifpnot 44216 ifpid2 44217 ifpim2 44218 uun0.1 45506 uunT1 45508 un10 45516 un01 45517 dfbi1ALTa 45668 simprimi 45669 n0abso 45705 liminfvalxr 46517 ovn02 47302 rmotru 49601 reutru 49602 |
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