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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 1566 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
| 3 | 1, 2 | mpbir 234 | 1 ⊢ ⊤ |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∀wal 1561 = wceq 1563 ⊤wtru 1564 |
| 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 1566 |
| This theorem is referenced by: dftru2 1568 trut 1569 mptru 1570 tbtru 1571 bitru 1572 trud 1573 truan 1574 fal 1577 truorfal 1601 falortru 1602 cadtru 1643 nftru 1827 altru 1830 extru 1998 sbtru 2099 vextru 2750 rextru 3096 rabtru 3651 disjprg 5100 reusv2lem5 5363 rabxfr 5379 reuhyp 5381 euotd 5486 mptexgf 7210 elabrex 7230 elabrexg 7231 caovcl 7594 caovass 7600 caovdi 7619 ectocl 8769 fin1a2lem10 10381 riotaneg 12182 zriotaneg 12697 eflt 16161 efgi0 19778 efgi1 19779 0frgp 19837 mpomulcn 24983 iundisj2 25665 pige3ALT 26639 tanord1 26656 tanord 26657 logtayl 26779 n0sind 28480 nnsind 28520 iundisj2f 32841 iundisj2fi 33050 ordtconn 34227 tgoldbachgt 34962 nexntru 36772 bj-fal 37018 bj-axd2d 37043 bj-rabtr 37422 bj-rabtrALT 37423 bj-dfid2ALT 37557 bj-finsumval0 37784 wl-impchain-mp-x 37948 wl-impchain-com-1.x 37952 wl-impchain-com-n.m 37957 wl-impchain-a1-x 37961 wl-moteq 38024 ftc1anclem5 38203 lhpexle1 40639 3lexlogpow5ineq2 42679 3lexlogpow2ineq1 42682 3lexlogpow2ineq2 42683 mzpcompact2lem 43339 ifpdfor 44048 ifpim1 44052 ifpnot 44053 ifpid2 44054 ifpim2 44055 uun0.1 45345 uunT1 45347 un10 45355 un01 45356 dfbi1ALTa 45507 simprimi 45508 n0abso 45544 liminfvalxr 46356 ovn02 47141 rmotru 49433 reutru 49434 |
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