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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 1545 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 231 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1540 = wceq 1542 ⊤wtru 1543 |
| 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 1545 |
| This theorem is referenced by: dftru2 1547 trut 1548 mptru 1549 tbtru 1550 bitru 1551 trud 1552 truan 1553 fal 1556 truorfal 1580 falortru 1581 cadtru 1622 nftru 1806 altru 1809 extru 1977 sbtru 2073 vextru 2722 rextru 3069 rabtru 3646 ss2abi 4020 disjprg 5096 reusv2lem5 5349 rabxfr 5365 reuhyp 5367 euotd 5469 mptexgf 7178 elabrex 7198 elabrexg 7199 caovcl 7562 caovass 7568 caovdi 7587 ectocl 8732 fin1a2lem10 10331 riotaneg 12133 zriotaneg 12617 eflt 16054 efgi0 19661 efgi1 19662 0frgp 19720 mpomulcn 24826 iundisj2 25518 pige3ALT 26497 tanord1 26514 tanord 26515 logtayl 26637 n0sind 28341 nnsind 28381 iundisj2f 32677 iundisj2fi 32888 ordtconn 34103 tgoldbachgt 34841 nexntru 36620 bj-fal 36793 bj-axd2d 36818 bj-rabtr 37178 bj-rabtrALT 37179 bj-dfid2ALT 37313 bj-finsumval0 37540 wl-impchain-mp-x 37702 wl-impchain-com-1.x 37706 wl-impchain-com-n.m 37711 wl-impchain-a1-x 37715 wl-moteq 37769 ftc1anclem5 37948 lhpexle1 40384 3lexlogpow5ineq2 42425 3lexlogpow2ineq1 42428 3lexlogpow2ineq2 42429 mzpcompact2lem 43108 ifpdfor 43821 ifpim1 43825 ifpnot 43826 ifpid2 43827 ifpim2 43828 uun0.1 45133 uunT1 45135 un10 45143 un01 45144 dfbi1ALTa 45295 simprimi 45296 n0abso 45332 liminfvalxr 46141 ovn02 46926 rmotru 49162 reutru 49163 |
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