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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 1544 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 231 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1539 = wceq 1541 ⊤wtru 1542 |
| 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 1544 |
| This theorem is referenced by: dftru2 1546 trut 1547 mptru 1548 tbtru 1549 bitru 1550 trud 1551 truan 1552 fal 1555 truorfal 1579 falortru 1580 cadtru 1621 nftru 1805 altru 1808 extru 1976 sbtru 2072 vextru 2721 rextru 3067 rabtru 3644 ss2abi 4018 disjprg 5094 reusv2lem5 5347 rabxfr 5363 reuhyp 5365 euotd 5461 mptexgf 7168 elabrex 7188 elabrexg 7189 caovcl 7552 caovass 7558 caovdi 7577 ectocl 8720 fin1a2lem10 10319 riotaneg 12121 zriotaneg 12605 eflt 16042 efgi0 19649 efgi1 19650 0frgp 19708 mpomulcn 24814 iundisj2 25506 pige3ALT 26485 tanord1 26502 tanord 26503 logtayl 26625 n0sind 28329 nnsind 28369 iundisj2f 32665 iundisj2fi 32877 ordtconn 34082 tgoldbachgt 34820 nexntru 36598 bj-fal 36770 bj-axd2d 36793 bj-rabtr 37131 bj-rabtrALT 37132 bj-dfid2ALT 37266 bj-finsumval0 37490 wl-impchain-mp-x 37652 wl-impchain-com-1.x 37656 wl-impchain-com-n.m 37661 wl-impchain-a1-x 37665 wl-moteq 37719 ftc1anclem5 37898 lhpexle1 40278 3lexlogpow5ineq2 42319 3lexlogpow2ineq1 42322 3lexlogpow2ineq2 42323 mzpcompact2lem 43003 ifpdfor 43716 ifpim1 43720 ifpnot 43721 ifpid2 43722 ifpim2 43723 uun0.1 45028 uunT1 45030 un10 45038 un01 45039 dfbi1ALTa 45190 simprimi 45191 n0abso 45227 liminfvalxr 46037 ovn02 46822 rmotru 49058 reutru 49059 |
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