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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 2721 rextru 3068 rabtru 3632 disjprg 5081 reusv2lem5 5344 rabxfr 5360 reuhyp 5362 euotd 5467 mptexgf 7177 elabrex 7197 elabrexg 7198 caovcl 7561 caovass 7567 caovdi 7586 ectocl 8730 fin1a2lem10 10331 riotaneg 12135 zriotaneg 12642 eflt 16084 efgi0 19695 efgi1 19696 0frgp 19754 mpomulcn 24834 iundisj2 25516 pige3ALT 26484 tanord1 26501 tanord 26502 logtayl 26624 n0sind 28325 nnsind 28365 iundisj2f 32660 iundisj2fi 32870 ordtconn 34069 tgoldbachgt 34807 nexntru 36586 bj-fal 36833 bj-axd2d 36858 bj-rabtr 37237 bj-rabtrALT 37238 bj-dfid2ALT 37372 bj-finsumval0 37599 wl-impchain-mp-x 37763 wl-impchain-com-1.x 37767 wl-impchain-com-n.m 37772 wl-impchain-a1-x 37776 wl-moteq 37839 ftc1anclem5 38018 lhpexle1 40454 3lexlogpow5ineq2 42494 3lexlogpow2ineq1 42497 3lexlogpow2ineq2 42498 mzpcompact2lem 43183 ifpdfor 43892 ifpim1 43896 ifpnot 43897 ifpid2 43898 ifpim2 43899 uun0.1 45204 uunT1 45206 un10 45214 un01 45215 dfbi1ALTa 45366 simprimi 45367 n0abso 45403 liminfvalxr 46211 ovn02 46996 rmotru 49278 reutru 49279 |
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