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Theorem sucpre 38748
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 38746 . . 3 (𝑁 ∈ ran SucMap → pre 𝑁 SucMap 𝑁)
2 preex 38743 . . . 4 pre 𝑁 ∈ V
3 brsucmap 38717 . . . 4 (( pre 𝑁 ∈ V ∧ 𝑁 ∈ ran SucMap ) → ( pre 𝑁 SucMap 𝑁 ↔ suc pre 𝑁 = 𝑁))
42, 3mpan 691 . . 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 38720 . 2 Suc = ran SucMap
75, 6eleq2s 2855 1 (𝑁 ∈ Suc → suc pre 𝑁 = 𝑁)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206   = wceq 1542  wcel 2114  Vcvv 3442   class class class wbr 5100  ran crn 5633  suc csuc 6327   SucMap csucmap 38429   Suc csuccl 38430   pre cpre 38431
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-nul 5253  ax-pr 5379  ax-un 7690  ax-reg 9509
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-eprel 5532  df-fr 5585  df-xp 5638  df-cnv 5640  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-pred 6267  df-suc 6331  df-iota 6456  df-sucmap 38713  df-succl 38720  df-pre 38726
This theorem is referenced by:  presuc  38749  press  38750  preel  38751
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