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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 1536 | . 2 ⊢ (⊤ ↔ (∀𝑥 𝑥 = 𝑥 → ∀𝑥 𝑥 = 𝑥)) | |
3 | 1, 2 | mpbir 233 | 1 ⊢ ⊤ |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∀wal 1531 = wceq 1533 ⊤wtru 1534 |
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 209 df-tru 1536 |
This theorem is referenced by: dftru2 1538 trut 1539 mptru 1540 tbtru 1541 bitru 1542 trud 1543 truan 1544 fal 1547 truorfal 1571 falortru 1572 trunortruOLD 1583 trunorfalOLD 1585 cadtru 1617 nftru 1801 altru 1804 extru 1976 sbtru 2068 vextru 2806 rabtru 3677 disjprgw 5054 disjprg 5055 reusv2lem5 5295 rabxfr 5311 reuhyp 5313 euotd 5396 elabrex 6996 caovcl 7336 caovass 7342 caovdi 7361 ectocl 8359 fin1a2lem10 9825 riotaneg 11614 zriotaneg 12090 cshwsexa 14180 eflt 15464 efgi0 18840 efgi1 18841 0frgp 18899 iundisj2 24144 pige3ALT 25099 tanord1 25115 tanord 25116 logtayl 25237 iundisj2f 30334 iundisj2fi 30514 ordtconn 31163 tgoldbachgt 31929 nexntru 33747 bj-axd2d 33922 bj-rabtr 34243 bj-rabtrALT 34244 bj-df-v 34341 bj-finsumval0 34561 wl-impchain-mp-x 34722 wl-impchain-com-1.x 34726 wl-impchain-com-n.m 34731 wl-impchain-a1-x 34735 wl-moteq 34748 ftc1anclem5 34965 lhpexle1 37138 mzpcompact2lem 39341 ifpdfor 39823 ifpim1 39827 ifpnot 39828 ifpid2 39829 ifpim2 39830 uun0.1 41105 uunT1 41107 un10 41115 un01 41116 elabrexg 41296 liminfvalxr 42056 ovn02 42843 |
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