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Theorem subval 9289
 Description: Value of subtraction, which is the (unique) element such that . (Contributed by NM, 4-Aug-2007.) (Revised by Mario Carneiro, 2-Nov-2013.)
Assertion
Ref Expression
subval
Distinct variable groups:   ,   ,

Proof of Theorem subval
Dummy variables are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqeq2 2444 . . 3
21riotabidv 6543 . 2
3 oveq1 6080 . . . 4
43eqeq1d 2443 . . 3
54riotabidv 6543 . 2
6 df-sub 9285 . 2
7 riotaex 6545 . 2
82, 5, 6, 7ovmpt2 6201 1
 Colors of variables: wff set class Syntax hints:   wi 4   wa 359   wceq 1652   wcel 1725  (class class class)co 6073  crio 6534  cc 8980   caddc 8985   cmin 9283 This theorem is referenced by:  subcl  9297  subf  9299  subadd  9300 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-nul 4330  ax-pr 4395 This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2284  df-mo 2285  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-ral 2702  df-rex 2703  df-reu 2704  df-rab 2706  df-v 2950  df-sbc 3154  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-opab 4259  df-id 4490  df-xp 4876  df-rel 4877  df-cnv 4878  df-co 4879  df-dm 4880  df-iota 5410  df-fun 5448  df-fv 5454  df-ov 6076  df-oprab 6077  df-mpt2 6078  df-riota 6541  df-sub 9285
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