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Theorem 1pru 7775
Description: The upper cut of the positive real number 'one'. (Contributed by Jim Kingdon, 28-Dec-2019.)
Assertion
Ref Expression
1pru (2nd ‘1P) = {𝑥 ∣ 1Q <Q 𝑥}

Proof of Theorem 1pru
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 df-i1p 7686 . . 3 1P = ⟨{𝑦𝑦 <Q 1Q}, {𝑥 ∣ 1Q <Q 𝑥}⟩
21fveq2i 5642 . 2 (2nd ‘1P) = (2nd ‘⟨{𝑦𝑦 <Q 1Q}, {𝑥 ∣ 1Q <Q 𝑥}⟩)
3 ltnqex 7768 . . 3 {𝑦𝑦 <Q 1Q} ∈ V
4 gtnqex 7769 . . 3 {𝑥 ∣ 1Q <Q 𝑥} ∈ V
53, 4op2nd 6309 . 2 (2nd ‘⟨{𝑦𝑦 <Q 1Q}, {𝑥 ∣ 1Q <Q 𝑥}⟩) = {𝑥 ∣ 1Q <Q 𝑥}
62, 5eqtri 2252 1 (2nd ‘1P) = {𝑥 ∣ 1Q <Q 𝑥}
Colors of variables: wff set class
Syntax hints:   = wceq 1397  {cab 2217  cop 3672   class class class wbr 4088  cfv 5326  2nd c2nd 6301  1Qc1q 7500   <Q cltq 7504  1Pc1p 7511
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-iinf 4686
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-iom 4689  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-2nd 6303  df-qs 6707  df-ni 7523  df-nqqs 7567  df-ltnqqs 7572  df-i1p 7686
This theorem is referenced by:  1idpru  7810  recexprlem1ssu  7853  recexprlemss1u  7855
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