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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 1570 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 234 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1565 = wceq 1567 ⊤wtru 1568 |
| 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 1570 |
| This theorem is referenced by: dftru2 1572 trut 1573 mptru 1574 tbtru 1575 bitru 1576 trud 1577 truan 1578 fal 1581 truorfal 1605 falortru 1606 cadtru 1647 nftru 1831 altru 1834 extru 2002 sbtru 2103 vextru 2754 rextru 3102 rabtru 3657 disjprg 5109 reusv2lem5 5374 rabxfr 5390 reuhyp 5392 euotd 5497 mptexgf 7221 elabrex 7241 elabrexg 7242 caovcl 7605 caovass 7611 caovdi 7630 ectocl 8781 fin1a2lem10 10393 riotaneg 12194 zriotaneg 12709 eflt 16173 efgi0 19790 efgi1 19791 0frgp 19849 mpomulcn 24995 iundisj2 25677 pige3ALT 26651 tanord1 26668 tanord 26669 logtayl 26791 n0sind 28492 nnsind 28532 iundisj2f 32876 iundisj2fi 33083 ordtconn 34260 tgoldbachgt 34995 nexntru 36804 bj-fal 37050 bj-axd2d 37075 bj-rabtr 37454 bj-rabtrALT 37455 bj-dfid2ALT 37589 bj-finsumval0 37817 wl-impchain-mp-x 37981 wl-impchain-com-1.x 37985 wl-impchain-com-n.m 37990 wl-impchain-a1-x 37994 wl-moteq 38057 ftc1anclem5 38236 lhpexle1 40672 3lexlogpow5ineq2 42712 3lexlogpow2ineq1 42715 3lexlogpow2ineq2 42716 mzpcompact2lem 43374 ifpdfor 44083 ifpim1 44087 ifpnot 44088 ifpid2 44089 ifpim2 44090 uun0.1 45378 uunT1 45380 un10 45388 un01 45389 dfbi1ALTa 45540 simprimi 45541 n0abso 45577 liminfvalxr 46389 ovn02 47174 rmotru 49466 reutru 49467 |
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