Theorem 0idsr 7965

Description: The signed real number 0 is an identity element for addition of signed reals. (Contributed by NM, 10-Apr-1996.)

Assertion

Ref	Expression
0idsr	|- ( A e. R. -> ( A +R 0R ) = A )

Proof of Theorem 0idsr

Dummy variables x y z w v are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-nr 7925	. 2 |- R. = ( ( P. X. P. ) /. ~R )
2		oveq1 6014	. . 3 |- ( [ <. x , y >. ] ~R = A -> ( [ <. x , y >. ] ~R +R 0R ) = ( A +R 0R ) )
3		id 19	. . 3 |- ( [ <. x , y >. ] ~R = A -> [ <. x , y >. ] ~R = A )
4	2, 3	eqeq12d 2244	. 2 |- ( [ <. x , y >. ] ~R = A -> ( ( [ <. x , y >. ] ~R +R 0R ) = [ <. x , y >. ] ~R <-> ( A +R 0R ) = A ) )
5		df-0r 7929	. . . 4 |- 0R = [ <. 1P , 1P >. ] ~R
6	5	oveq2i 6018	. . 3 |- ( [ <. x , y >. ] ~R +R 0R ) = ( [ <. x , y >. ] ~R +R [ <. 1P , 1P >. ] ~R )
7		1pr 7752	. . . . 5 |- 1P e. P.
8		addsrpr 7943	. . . . 5 |- ( ( ( x e. P. /\ y e. P. ) /\ ( 1P e. P. /\ 1P e. P. ) ) -> ( [ <. x , y >. ] ~R +R [ <. 1P , 1P >. ] ~R ) = [ <. ( x +P. 1P ) , ( y +P. 1P ) >. ] ~R )
9	7, 7, 8	mpanr12 439	. . . 4 |- ( ( x e. P. /\ y e. P. ) -> ( [ <. x , y >. ] ~R +R [ <. 1P , 1P >. ] ~R ) = [ <. ( x +P. 1P ) , ( y +P. 1P ) >. ] ~R )
10		simpl 109	. . . . . 6 |- ( ( x e. P. /\ y e. P. ) -> x e. P. )
11		simpr 110	. . . . . 6 |- ( ( x e. P. /\ y e. P. ) -> y e. P. )
12	7	a1i 9	. . . . . 6 |- ( ( x e. P. /\ y e. P. ) -> 1P e. P. )
13		addcomprg 7776	. . . . . . 7 |- ( ( z e. P. /\ w e. P. ) -> ( z +P. w ) = ( w +P. z ) )
14	13	adantl 277	. . . . . 6 |- ( ( ( x e. P. /\ y e. P. ) /\ ( z e. P. /\ w e. P. ) ) -> ( z +P. w ) = ( w +P. z ) )
15		addassprg 7777	. . . . . . 7 |- ( ( z e. P. /\ w e. P. /\ v e. P. ) -> ( ( z +P. w ) +P. v ) = ( z +P. ( w +P. v ) ) )
16	15	adantl 277	. . . . . 6 |- ( ( ( x e. P. /\ y e. P. ) /\ ( z e. P. /\ w e. P. /\ v e. P. ) ) -> ( ( z +P. w ) +P. v ) = ( z +P. ( w +P. v ) ) )
17	10, 11, 12, 14, 16	caov12d 6193	. . . . 5 |- ( ( x e. P. /\ y e. P. ) -> ( x +P. ( y +P. 1P ) ) = ( y +P. ( x +P. 1P ) ) )
18		addclpr 7735	. . . . . . . 8 |- ( ( x e. P. /\ 1P e. P. ) -> ( x +P. 1P ) e. P. )
19	7, 18	mpan2 425	. . . . . . 7 |- ( x e. P. -> ( x +P. 1P ) e. P. )
20		addclpr 7735	. . . . . . . 8 |- ( ( y e. P. /\ 1P e. P. ) -> ( y +P. 1P ) e. P. )
21	7, 20	mpan2 425	. . . . . . 7 |- ( y e. P. -> ( y +P. 1P ) e. P. )
22	19, 21	anim12i 338	. . . . . 6 |- ( ( x e. P. /\ y e. P. ) -> ( ( x +P. 1P ) e. P. /\ ( y +P. 1P ) e. P. ) )
23		enreceq 7934	. . . . . 6 |- ( ( ( x e. P. /\ y e. P. ) /\ ( ( x +P. 1P ) e. P. /\ ( y +P. 1P ) e. P. ) ) -> ( [ <. x , y >. ] ~R = [ <. ( x +P. 1P ) , ( y +P. 1P ) >. ] ~R <-> ( x +P. ( y +P. 1P ) ) = ( y +P. ( x +P. 1P ) ) ) )
24	22, 23	mpdan 421	. . . . 5 |- ( ( x e. P. /\ y e. P. ) -> ( [ <. x , y >. ] ~R = [ <. ( x +P. 1P ) , ( y +P. 1P ) >. ] ~R <-> ( x +P. ( y +P. 1P ) ) = ( y +P. ( x +P. 1P ) ) ) )
25	17, 24	mpbird 167	. . . 4 |- ( ( x e. P. /\ y e. P. ) -> [ <. x , y >. ] ~R = [ <. ( x +P. 1P ) , ( y +P. 1P ) >. ] ~R )
26	9, 25	eqtr4d 2265	. . 3 |- ( ( x e. P. /\ y e. P. ) -> ( [ <. x , y >. ] ~R +R [ <. 1P , 1P >. ] ~R ) = [ <. x , y >. ] ~R )
27	6, 26	eqtrid 2274	. 2 |- ( ( x e. P. /\ y e. P. ) -> ( [ <. x , y >. ] ~R +R 0R ) = [ <. x , y >. ] ~R )
28	1, 4, 27	ecoptocl 6777	1 |- ( A e. R. -> ( A +R 0R ) = A )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 1002   = wceq 1395   e. wcel 2200   <.cop 3669  (class class class)co 6007   [cec 6686   P.cnp 7489   1Pc1p 7490   +P. cpp 7491   ~R cer 7494   R.cnr 7495   0Rc0r 7496   +R cplr 7499

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4199  ax-sep 4202  ax-nul 4210  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-iinf 4680

This theorem depends on definitions:  df-bi 117  df-dc 840  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-nul 3492  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-iun 3967  df-br 4084  df-opab 4146  df-mpt 4147  df-tr 4183  df-eprel 4380  df-id 4384  df-po 4387  df-iso 4388  df-iord 4457  df-on 4459  df-suc 4462  df-iom 4683  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-f1 5323  df-fo 5324  df-f1o 5325  df-fv 5326  df-ov 6010  df-oprab 6011  df-mpo 6012  df-1st 6292  df-2nd 6293  df-recs 6457  df-irdg 6522  df-1o 6568  df-2o 6569  df-oadd 6572  df-omul 6573  df-er 6688  df-ec 6690  df-qs 6694  df-ni 7502  df-pli 7503  df-mi 7504  df-lti 7505  df-plpq 7542  df-mpq 7543  df-enq 7545  df-nqqs 7546  df-plqqs 7547  df-mqqs 7548  df-1nqqs 7549  df-rq 7550  df-ltnqqs 7551  df-enq0 7622  df-nq0 7623  df-0nq0 7624  df-plq0 7625  df-mq0 7626  df-inp 7664  df-i1p 7665  df-iplp 7666  df-enr 7924  df-nr 7925  df-plr 7926  df-0r 7929

This theorem is referenced by:  addgt0sr  7973  ltadd1sr  7974  ltm1sr  7975  caucvgsrlemoffval  7994  caucvgsrlemoffres  7998  caucvgsr  8000  map2psrprg  8003  suplocsrlempr  8005  addresr  8035  mulresr  8036  axi2m1  8073  ax0id  8076  axcnre  8079