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Theorem sucpre 38670
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 38668 . . 3 (𝑁 ∈ ran SucMap → pre 𝑁 SucMap 𝑁)
2 preex 38665 . . . 4 pre 𝑁 ∈ V
3 brsucmap 38640 . . . 4 (( pre 𝑁 ∈ V ∧ 𝑁 ∈ ran SucMap ) → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
42, 3mpan 690 . . 3 (𝑁 ∈ ran SucMap → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
51, 4mpbid 232 . 2 (𝑁 ∈ ran SucMap → suc pre 𝑁 = 𝑁)
6 df-succl 38643 . 2 Suc = ran SucMap
75, 6eleq2s 2854 1 (𝑁 ∈ Suc → suc pre 𝑁 = 𝑁)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206   = wceq 1541  wcel 2113  Vcvv 3440   class class class wbr 5098  ran crn 5625  suc csuc 6319   SucMap csucmap 38378   Suc csuccl 38379   pre cpre 38380
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2184  ax-ext 2708  ax-sep 5241  ax-nul 5251  ax-pr 5377  ax-un 7680  ax-reg 9497
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-rab 3400  df-v 3442  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4581  df-pr 4583  df-op 4587  df-uni 4864  df-br 5099  df-opab 5161  df-eprel 5524  df-fr 5577  df-xp 5630  df-cnv 5632  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-pred 6259  df-suc 6323  df-iota 6448  df-sucmap 38636  df-succl 38643  df-pre 38649
This theorem is referenced by:  presuc  38671  press  38672  preel  38673
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