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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 3633 disjprg 5082 reusv2lem5 5340 rabxfr 5356 reuhyp 5358 euotd 5462 mptexgf 7171 elabrex 7191 elabrexg 7192 caovcl 7555 caovass 7561 caovdi 7580 ectocl 8724 fin1a2lem10 10325 riotaneg 12129 zriotaneg 12636 eflt 16078 efgi0 19689 efgi1 19690 0frgp 19748 mpomulcn 24847 iundisj2 25529 pige3ALT 26500 tanord1 26517 tanord 26518 logtayl 26640 n0sind 28342 nnsind 28382 iundisj2f 32678 iundisj2fi 32888 ordtconn 34088 tgoldbachgt 34826 nexntru 36605 bj-fal 36852 bj-axd2d 36877 bj-rabtr 37256 bj-rabtrALT 37257 bj-dfid2ALT 37391 bj-finsumval0 37618 wl-impchain-mp-x 37780 wl-impchain-com-1.x 37784 wl-impchain-com-n.m 37789 wl-impchain-a1-x 37793 wl-moteq 37856 ftc1anclem5 38035 lhpexle1 40471 3lexlogpow5ineq2 42511 3lexlogpow2ineq1 42514 3lexlogpow2ineq2 42515 mzpcompact2lem 43200 ifpdfor 43913 ifpim1 43917 ifpnot 43918 ifpid2 43919 ifpim2 43920 uun0.1 45225 uunT1 45227 un10 45235 un01 45236 dfbi1ALTa 45387 simprimi 45388 n0abso 45424 liminfvalxr 46232 ovn02 47017 rmotru 49293 reutru 49294 |
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