Theorem peano5nnnn 7959

Description: Peano's inductive postulate. This is a counterpart to peano5nni 8993 designed for real number axioms which involve natural numbers (notably, axcaucvg 7967). (Contributed by Jim Kingdon, 14-Jul-2021.) (New usage is discouraged.)

Hypothesis

Ref	Expression
nntopi.n	|- N = |^| { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) }

Assertion

Ref	Expression
peano5nnnn	|- ( ( 1 e. A /\ A. z e. A ( z + 1 ) e. A ) -> N C_ A )

Distinct variable groups:   x, y, A   z, A, y

Allowed substitution hints:   N( x, y, z)

Proof of Theorem peano5nnnn

Step	Hyp	Ref	Expression
1		oveq1 5929	. . . 4 |- ( y = z -> ( y + 1 ) = ( z + 1 ) )
2	1	eleq1d 2265	. . 3 |- ( y = z -> ( ( y + 1 ) e. A <-> ( z + 1 ) e. A ) )
3	2	cbvralv 2729	. 2 |- ( A. y e. A ( y + 1 ) e. A <-> A. z e. A ( z + 1 ) e. A )
4		ax1re 7929	. . . . 5 |- 1 e. RR
5		elin 3346	. . . . . 6 |- ( 1 e. ( A i^i RR ) <-> ( 1 e. A /\ 1 e. RR ) )
6	5	biimpri 133	. . . . 5 |- ( ( 1 e. A /\ 1 e. RR ) -> 1 e. ( A i^i RR ) )
7	4, 6	mpan2 425	. . . 4 |- ( 1 e. A -> 1 e. ( A i^i RR ) )
8		inss1 3383	. . . . . 6 |- ( A i^i RR ) C_ A
9		ssralv 3247	. . . . . 6 |- ( ( A i^i RR ) C_ A -> ( A. y e. A ( y + 1 ) e. A -> A. y e. ( A i^i RR ) ( y + 1 ) e. A ) )
10	8, 9	ax-mp 5	. . . . 5 |- ( A. y e. A ( y + 1 ) e. A -> A. y e. ( A i^i RR ) ( y + 1 ) e. A )
11		inss2 3384	. . . . . . . 8 |- ( A i^i RR ) C_ RR
12	11	sseli 3179	. . . . . . 7 |- ( y e. ( A i^i RR ) -> y e. RR )
13		axaddrcl 7932	. . . . . . . 8 |- ( ( y e. RR /\ 1 e. RR ) -> ( y + 1 ) e. RR )
14	4, 13	mpan2 425	. . . . . . 7 |- ( y e. RR -> ( y + 1 ) e. RR )
15		elin 3346	. . . . . . . 8 |- ( ( y + 1 ) e. ( A i^i RR ) <-> ( ( y + 1 ) e. A /\ ( y + 1 ) e. RR ) )
16	15	simplbi2com 1455	. . . . . . 7 |- ( ( y + 1 ) e. RR -> ( ( y + 1 ) e. A -> ( y + 1 ) e. ( A i^i RR ) ) )
17	12, 14, 16	3syl 17	. . . . . 6 |- ( y e. ( A i^i RR ) -> ( ( y + 1 ) e. A -> ( y + 1 ) e. ( A i^i RR ) ) )
18	17	ralimia 2558	. . . . 5 |- ( A. y e. ( A i^i RR ) ( y + 1 ) e. A -> A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) )
19	10, 18	syl 14	. . . 4 |- ( A. y e. A ( y + 1 ) e. A -> A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) )
20		axcnex 7926	. . . . . . 7 |- CC e. _V
21		axresscn 7927	. . . . . . 7 |- RR C_ CC
22	20, 21	ssexi 4171	. . . . . 6 |- RR e. _V
23	22	inex2 4168	. . . . 5 |- ( A i^i RR ) e. _V
24		eleq2 2260	. . . . . . . 8 |- ( x = ( A i^i RR ) -> ( 1 e. x <-> 1 e. ( A i^i RR ) ) )
25		eleq2 2260	. . . . . . . . 9 |- ( x = ( A i^i RR ) -> ( ( y + 1 ) e. x <-> ( y + 1 ) e. ( A i^i RR ) ) )
26	25	raleqbi1dv 2705	. . . . . . . 8 |- ( x = ( A i^i RR ) -> ( A. y e. x ( y + 1 ) e. x <-> A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) ) )
27	24, 26	anbi12d 473	. . . . . . 7 |- ( x = ( A i^i RR ) -> ( ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) <-> ( 1 e. ( A i^i RR ) /\ A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) ) ) )
28	27	elabg 2910	. . . . . 6 |- ( ( A i^i RR ) e. _V -> ( ( A i^i RR ) e. { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) } <-> ( 1 e. ( A i^i RR ) /\ A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) ) ) )
29		nntopi.n	. . . . . . 7 |- N = |^| { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) }
30		intss1 3889	. . . . . . 7 |- ( ( A i^i RR ) e. { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) } -> |^| { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) } C_ ( A i^i RR ) )
31	29, 30	eqsstrid 3229	. . . . . 6 |- ( ( A i^i RR ) e. { x | ( 1 e. x /\ A. y e. x ( y + 1 ) e. x ) } -> N C_ ( A i^i RR ) )
32	28, 31	biimtrrdi 164	. . . . 5 |- ( ( A i^i RR ) e. _V -> ( ( 1 e. ( A i^i RR ) /\ A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) ) -> N C_ ( A i^i RR ) ) )
33	23, 32	ax-mp 5	. . . 4 |- ( ( 1 e. ( A i^i RR ) /\ A. y e. ( A i^i RR ) ( y + 1 ) e. ( A i^i RR ) ) -> N C_ ( A i^i RR ) )
34	7, 19, 33	syl2an 289	. . 3 |- ( ( 1 e. A /\ A. y e. A ( y + 1 ) e. A ) -> N C_ ( A i^i RR ) )
35	34, 8	sstrdi 3195	. 2 |- ( ( 1 e. A /\ A. y e. A ( y + 1 ) e. A ) -> N C_ A )
36	3, 35	sylan2br 288	1 |- ( ( 1 e. A /\ A. z e. A ( z + 1 ) e. A ) -> N C_ A )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1364   e. wcel 2167   {cab 2182   A.wral 2475   _Vcvv 2763   i^i cin 3156   C_ wss 3157   |^|cint 3874  (class class class)co 5922   CCcc 7877   RRcr 7878   1c1 7880   + caddc 7882

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 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-coll 4148  ax-sep 4151  ax-nul 4159  ax-pow 4207  ax-pr 4242  ax-un 4468  ax-setind 4573  ax-iinf 4624

This theorem depends on definitions:  df-bi 117  df-dc 836  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-ral 2480  df-rex 2481  df-reu 2482  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3451  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-int 3875  df-iun 3918  df-br 4034  df-opab 4095  df-mpt 4096  df-tr 4132  df-eprel 4324  df-id 4328  df-po 4331  df-iso 4332  df-iord 4401  df-on 4403  df-suc 4406  df-iom 4627  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-f1 5263  df-fo 5264  df-f1o 5265  df-fv 5266  df-ov 5925  df-oprab 5926  df-mpo 5927  df-1st 6198  df-2nd 6199  df-recs 6363  df-irdg 6428  df-1o 6474  df-2o 6475  df-oadd 6478  df-omul 6479  df-er 6592  df-ec 6594  df-qs 6598  df-ni 7371  df-pli 7372  df-mi 7373  df-lti 7374  df-plpq 7411  df-mpq 7412  df-enq 7414  df-nqqs 7415  df-plqqs 7416  df-mqqs 7417  df-1nqqs 7418  df-rq 7419  df-ltnqqs 7420  df-enq0 7491  df-nq0 7492  df-0nq0 7493  df-plq0 7494  df-mq0 7495  df-inp 7533  df-i1p 7534  df-iplp 7535  df-enr 7793  df-nr 7794  df-plr 7795  df-0r 7798  df-1r 7799  df-c 7885  df-1 7887  df-r 7889  df-add 7890

This theorem is referenced by:  nnindnn  7960