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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 1563 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 233 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1558 = wceq 1560 ⊤wtru 1561 |
| 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 209 df-tru 1563 |
| This theorem is referenced by: dftru2 1565 trut 1566 mptru 1567 tbtru 1568 bitru 1569 trud 1570 truan 1571 fal 1574 truorfal 1598 falortru 1599 cadtru 1640 nftru 1824 altru 1827 extru 1995 sbtru 2096 vextru 2747 rextru 3093 rabtru 3648 disjprg 5096 reusv2lem5 5359 rabxfr 5375 reuhyp 5377 euotd 5482 mptexgf 7206 elabrex 7226 elabrexg 7227 caovcl 7590 caovass 7596 caovdi 7615 ectocl 8765 fin1a2lem10 10366 riotaneg 12171 zriotaneg 12686 eflt 16149 efgi0 19760 efgi1 19761 0frgp 19819 mpomulcn 24929 iundisj2 25611 pige3ALT 26585 tanord1 26602 tanord 26603 logtayl 26725 n0sind 28426 nnsind 28466 iundisj2f 32790 iundisj2fi 32999 ordtconn 34222 tgoldbachgt 34957 nexntru 36764 bj-fal 37011 bj-axd2d 37036 bj-rabtr 37415 bj-rabtrALT 37416 bj-dfid2ALT 37550 bj-finsumval0 37777 wl-impchain-mp-x 37941 wl-impchain-com-1.x 37945 wl-impchain-com-n.m 37950 wl-impchain-a1-x 37954 wl-moteq 38017 ftc1anclem5 38196 lhpexle1 40632 3lexlogpow5ineq2 42672 3lexlogpow2ineq1 42675 3lexlogpow2ineq2 42676 mzpcompact2lem 43332 ifpdfor 44041 ifpim1 44045 ifpnot 44046 ifpid2 44047 ifpim2 44048 uun0.1 45353 uunT1 45355 un10 45363 un01 45364 dfbi1ALTa 45515 simprimi 45516 n0abso 45552 liminfvalxr 46357 ovn02 47142 rmotru 49424 reutru 49425 |
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