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Theorem zaddcllemneg 9618
Description: Lemma for zaddcl 9619. Special case in which  -u N is a positive integer. (Contributed by Jim Kingdon, 14-Mar-2020.)
Assertion
Ref Expression
zaddcllemneg  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  ( M  +  N )  e.  ZZ )

Proof of Theorem zaddcllemneg
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simp2 1025 . . . . 5  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  N  e.  RR )
21recnd 8304 . . . 4  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  N  e.  CC )
32negnegd 8577 . . 3  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  -u -u N  =  N )
43oveq2d 6068 . 2  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  ( M  +  -u -u N
)  =  ( M  +  N ) )
5 negeq 8468 . . . . . . . 8  |-  ( x  =  1  ->  -u x  =  -u 1 )
65oveq2d 6068 . . . . . . 7  |-  ( x  =  1  ->  ( M  +  -u x )  =  ( M  +  -u 1 ) )
76eleq1d 2303 . . . . . 6  |-  ( x  =  1  ->  (
( M  +  -u x )  e.  ZZ  <->  ( M  +  -u 1
)  e.  ZZ ) )
87imbi2d 230 . . . . 5  |-  ( x  =  1  ->  (
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u x )  e.  ZZ )  <->  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u 1 )  e.  ZZ ) ) )
9 negeq 8468 . . . . . . . 8  |-  ( x  =  y  ->  -u x  =  -u y )
109oveq2d 6068 . . . . . . 7  |-  ( x  =  y  ->  ( M  +  -u x )  =  ( M  +  -u y ) )
1110eleq1d 2303 . . . . . 6  |-  ( x  =  y  ->  (
( M  +  -u x )  e.  ZZ  <->  ( M  +  -u y
)  e.  ZZ ) )
1211imbi2d 230 . . . . 5  |-  ( x  =  y  ->  (
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u x )  e.  ZZ )  <->  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u y )  e.  ZZ ) ) )
13 negeq 8468 . . . . . . . 8  |-  ( x  =  ( y  +  1 )  ->  -u x  =  -u ( y  +  1 ) )
1413oveq2d 6068 . . . . . . 7  |-  ( x  =  ( y  +  1 )  ->  ( M  +  -u x )  =  ( M  +  -u ( y  +  1 ) ) )
1514eleq1d 2303 . . . . . 6  |-  ( x  =  ( y  +  1 )  ->  (
( M  +  -u x )  e.  ZZ  <->  ( M  +  -u (
y  +  1 ) )  e.  ZZ ) )
1615imbi2d 230 . . . . 5  |-  ( x  =  ( y  +  1 )  ->  (
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u x )  e.  ZZ )  <->  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u ( y  +  1 ) )  e.  ZZ ) ) )
17 negeq 8468 . . . . . . . 8  |-  ( x  =  -u N  ->  -u x  =  -u -u N )
1817oveq2d 6068 . . . . . . 7  |-  ( x  =  -u N  ->  ( M  +  -u x )  =  ( M  +  -u -u N ) )
1918eleq1d 2303 . . . . . 6  |-  ( x  =  -u N  ->  (
( M  +  -u x )  e.  ZZ  <->  ( M  +  -u -u N
)  e.  ZZ ) )
2019imbi2d 230 . . . . 5  |-  ( x  =  -u N  ->  (
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u x )  e.  ZZ )  <->  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u -u N
)  e.  ZZ ) ) )
21 zcn 9584 . . . . . . . 8  |-  ( M  e.  ZZ  ->  M  e.  CC )
2221adantr 276 . . . . . . 7  |-  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  M  e.  CC )
23 1cnd 8292 . . . . . . 7  |-  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  1  e.  CC )
2422, 23negsubd 8592 . . . . . 6  |-  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u
1 )  =  ( M  -  1 ) )
25 peano2zm 9617 . . . . . . 7  |-  ( M  e.  ZZ  ->  ( M  -  1 )  e.  ZZ )
2625adantr 276 . . . . . 6  |-  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  -  1 )  e.  ZZ )
2724, 26eqeltrd 2311 . . . . 5  |-  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u
1 )  e.  ZZ )
28 nncn 9247 . . . . . . . . . . 11  |-  ( y  e.  NN  ->  y  e.  CC )
2928ad2antrr 488 . . . . . . . . . 10  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  y  e.  CC )
30 1cnd 8292 . . . . . . . . . 10  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  1  e.  CC )
3129, 30negdi2d 8600 . . . . . . . . 9  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  -u (
y  +  1 )  =  ( -u y  -  1 ) )
3231oveq2d 6068 . . . . . . . 8  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  ( M  +  -u ( y  +  1 ) )  =  ( M  +  ( -u y  -  1 ) ) )
3322ad2antlr 489 . . . . . . . . . 10  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  M  e.  CC )
3429negcld 8573 . . . . . . . . . 10  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  -u y  e.  CC )
3533, 34, 30addsubassd 8606 . . . . . . . . 9  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  (
( M  +  -u y )  -  1 )  =  ( M  +  ( -u y  -  1 ) ) )
36 peano2zm 9617 . . . . . . . . . 10  |-  ( ( M  +  -u y
)  e.  ZZ  ->  ( ( M  +  -u y )  -  1 )  e.  ZZ )
3736adantl 277 . . . . . . . . 9  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  (
( M  +  -u y )  -  1 )  e.  ZZ )
3835, 37eqeltrrd 2312 . . . . . . . 8  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  ( M  +  ( -u y  -  1 ) )  e.  ZZ )
3932, 38eqeltrd 2311 . . . . . . 7  |-  ( ( ( y  e.  NN  /\  ( M  e.  ZZ  /\  N  e.  RR ) )  /\  ( M  +  -u y )  e.  ZZ )  ->  ( M  +  -u ( y  +  1 ) )  e.  ZZ )
4039exp31 364 . . . . . 6  |-  ( y  e.  NN  ->  (
( M  e.  ZZ  /\  N  e.  RR )  ->  ( ( M  +  -u y )  e.  ZZ  ->  ( M  +  -u ( y  +  1 ) )  e.  ZZ ) ) )
4140a2d 26 . . . . 5  |-  ( y  e.  NN  ->  (
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u y )  e.  ZZ )  -> 
( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u ( y  +  1 ) )  e.  ZZ ) ) )
428, 12, 16, 20, 27, 41nnind 9255 . . . 4  |-  ( -u N  e.  NN  ->  ( ( M  e.  ZZ  /\  N  e.  RR )  ->  ( M  +  -u -u N )  e.  ZZ ) )
4342impcom 125 . . 3  |-  ( ( ( M  e.  ZZ  /\  N  e.  RR )  /\  -u N  e.  NN )  ->  ( M  +  -u -u N )  e.  ZZ )
44433impa 1221 . 2  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  ( M  +  -u -u N
)  e.  ZZ )
454, 44eqeltrrd 2312 1  |-  ( ( M  e.  ZZ  /\  N  e.  RR  /\  -u N  e.  NN )  ->  ( M  +  N )  e.  ZZ )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1005    = wceq 1398    e. wcel 2205  (class class class)co 6052   CCcc 8127   RRcr 8128   1c1 8130    + caddc 8132    - cmin 8446   -ucneg 8447   NNcn 9239   ZZcz 9579
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-cnex 8220  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-addcom 8229  ax-addass 8231  ax-distr 8233  ax-i2m1 8234  ax-0lt1 8235  ax-0id 8237  ax-rnegex 8238  ax-cnre 8240  ax-pre-ltirr 8241  ax-pre-ltwlin 8242  ax-pre-lttrn 8243  ax-pre-ltadd 8245
This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3045  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-br 4112  df-opab 4174  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-iota 5314  df-fun 5356  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-pnf 8312  df-mnf 8313  df-xr 8314  df-ltxr 8315  df-le 8316  df-sub 8448  df-neg 8449  df-inn 9240  df-n0 9499  df-z 9580
This theorem is referenced by:  zaddcl  9619
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