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Theorem sucpre 38996
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 38994 . . 3 (𝑁 ∈ ran SucMap → pre 𝑁 SucMap 𝑁)
2 preex 38991 . . . 4 pre 𝑁 ∈ V
3 brsucmap 38965 . . . 4 (( pre 𝑁 ∈ V ∧ 𝑁 ∈ ran SucMap ) → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
42, 3mpan 700 . . 3 (𝑁 ∈ ran SucMap → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
51, 4mpbid 234 . 2 (𝑁 ∈ ran SucMap → suc pre 𝑁 = 𝑁)
6 df-succl 38968 . 2 Suc = ran SucMap
75, 6eleq2s 2880 1 (𝑁 ∈ Suc → suc pre 𝑁 = 𝑁)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208   = wceq 1560  wcel 2142  Vcvv 3454   class class class wbr 5100  ran crn 5648  suc csuc 6348   SucMap csucmap 38677   Suc csuccl 38678   pre cpre 38679
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-nul 5256  ax-pr 5390  ax-un 7718  ax-reg 9540
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3077  df-rex 3087  df-rab 3415  df-v 3456  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4481  df-pw 4557  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-eprel 5547  df-fr 5600  df-xp 5653  df-cnv 5655  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-pred 6288  df-suc 6352  df-iota 6477  df-sucmap 38961  df-succl 38968  df-pre 38974
This theorem is referenced by:  presuc  38997  press  38998  preel  38999
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