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Theorem sucpre 39035
Description: suc is a right-inverse of pre on Suc. This theorem states the partial inverse relation in the direction we most often need. (Contributed by Peter Mazsa, 27-Jan-2026.)
Assertion
Ref Expression
sucpre (𝑁 ∈ Suc → suc pre 𝑁 = 𝑁)

Proof of Theorem sucpre
StepHypRef Expression
1 presucmap 39033 . . 3 (𝑁 ∈ ran SucMap → pre 𝑁 SucMap 𝑁)
2 preex 39030 . . . 4 pre 𝑁 ∈ V
3 brsucmap 39004 . . . 4 (( pre 𝑁 ∈ V ∧ 𝑁 ∈ ran SucMap ) → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
42, 3mpan 702 . . 3 (𝑁 ∈ ran SucMap → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
51, 4mpbid 235 . 2 (𝑁 ∈ ran SucMap → suc pre 𝑁 = 𝑁)
6 df-succl 39007 . 2 Suc = ran SucMap
75, 6eleq2s 2887 1 (𝑁 ∈ Suc → suc pre 𝑁 = 𝑁)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209   = wceq 1567  wcel 2149  Vcvv 3463   class class class wbr 5113  ran crn 5663  suc csuc 6363   SucMap csucmap 38716   Suc csuccl 38717   pre cpre 38718
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-sep 5261  ax-nul 5271  ax-pr 5405  ax-un 7733  ax-reg 9553
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-br 5114  df-opab 5178  df-eprel 5562  df-fr 5615  df-xp 5668  df-cnv 5670  df-dm 5672  df-rn 5673  df-res 5674  df-ima 5675  df-pred 6303  df-suc 6367  df-iota 6493  df-sucmap 39000  df-succl 39007  df-pre 39013
This theorem is referenced by:  presuc  39036  press  39037  preel  39038
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