Theorem ennnfonelemk 12971

Description: Lemma for ennnfone 12996. (Contributed by Jim Kingdon, 15-Jul-2023.)

Hypotheses

Ref	Expression
ennnfonelemk.f	|- ( ph -> F : om -onto-> A )
ennnfonelemk.k	|- ( ph -> K e. om )
ennnfonelemk.n	|- ( ph -> N e. om )
ennnfonelemk.j	|- ( ph -> A. j e. suc N ( F ` K ) =/= ( F ` j ) )

Assertion

Ref	Expression
ennnfonelemk	|- ( ph -> N e. K )

Distinct variable groups:   j, F   j, K   j, N

Allowed substitution hints:   ph( j)   A( j)

Proof of Theorem ennnfonelemk

Step	Hyp	Ref	Expression
1		simpr 110	. 2 |- ( ( ph /\ N e. K ) -> N e. K )
2		eqimss2 3279	. . . 4 |- ( N = K -> K C_ N )
3	2	adantl 277	. . 3 |- ( ( ph /\ N = K ) -> K C_ N )
4		eqid 2229	. . . . 5 |- ( F ` K ) = ( F ` K )
5		fveq2 5627	. . . . . . . . 9 |- ( j = K -> ( F ` j ) = ( F ` K ) )
6	5	neeq2d 2419	. . . . . . . 8 |- ( j = K -> ( ( F ` K ) =/= ( F ` j ) <-> ( F ` K ) =/= ( F ` K ) ) )
7		ennnfonelemk.j	. . . . . . . . 9 |- ( ph -> A. j e. suc N ( F ` K ) =/= ( F ` j ) )
8	7	adantr 276	. . . . . . . 8 |- ( ( ph /\ K C_ N ) -> A. j e. suc N ( F ` K ) =/= ( F ` j ) )
9		simpr 110	. . . . . . . . . 10 |- ( ( ph /\ K C_ N ) -> K C_ N )
10		ennnfonelemk.k	. . . . . . . . . . . 12 |- ( ph -> K e. om )
11	10	adantr 276	. . . . . . . . . . 11 |- ( ( ph /\ K C_ N ) -> K e. om )
12		ennnfonelemk.n	. . . . . . . . . . . 12 |- ( ph -> N e. om )
13	12	adantr 276	. . . . . . . . . . 11 |- ( ( ph /\ K C_ N ) -> N e. om )
14		nnsucsssuc 6638	. . . . . . . . . . 11 |- ( ( K e. om /\ N e. om ) -> ( K C_ N <-> suc K C_ suc N ) )
15	11, 13, 14	syl2anc 411	. . . . . . . . . 10 |- ( ( ph /\ K C_ N ) -> ( K C_ N <-> suc K C_ suc N ) )
16	9, 15	mpbid 147	. . . . . . . . 9 |- ( ( ph /\ K C_ N ) -> suc K C_ suc N )
17		peano2 4687	. . . . . . . . . . 11 |- ( N e. om -> suc N e. om )
18		nnord 4704	. . . . . . . . . . 11 |- ( suc N e. om -> Ord suc N )
19	13, 17, 18	3syl 17	. . . . . . . . . 10 |- ( ( ph /\ K C_ N ) -> Ord suc N )
20		ordelsuc 4597	. . . . . . . . . 10 |- ( ( K e. om /\ Ord suc N ) -> ( K e. suc N <-> suc K C_ suc N ) )
21	11, 19, 20	syl2anc 411	. . . . . . . . 9 |- ( ( ph /\ K C_ N ) -> ( K e. suc N <-> suc K C_ suc N ) )
22	16, 21	mpbird 167	. . . . . . . 8 |- ( ( ph /\ K C_ N ) -> K e. suc N )
23	6, 8, 22	rspcdva 2912	. . . . . . 7 |- ( ( ph /\ K C_ N ) -> ( F ` K ) =/= ( F ` K ) )
24	23	neneqd 2421	. . . . . 6 |- ( ( ph /\ K C_ N ) -> -. ( F ` K ) = ( F ` K ) )
25	24	ex 115	. . . . 5 |- ( ph -> ( K C_ N -> -. ( F ` K ) = ( F ` K ) ) )
26	4, 25	mt2i 647	. . . 4 |- ( ph -> -. K C_ N )
27	26	adantr 276	. . 3 |- ( ( ph /\ N = K ) -> -. K C_ N )
28	3, 27	pm2.21dd 623	. 2 |- ( ( ph /\ N = K ) -> N e. K )
29	12	adantr 276	. . . . 5 |- ( ( ph /\ K e. N ) -> N e. om )
30		nnon 4702	. . . . 5 |- ( N e. om -> N e. On )
31	29, 30	syl 14	. . . 4 |- ( ( ph /\ K e. N ) -> N e. On )
32		simpr 110	. . . 4 |- ( ( ph /\ K e. N ) -> K e. N )
33		onelss 4478	. . . 4 |- ( N e. On -> ( K e. N -> K C_ N ) )
34	31, 32, 33	sylc 62	. . 3 |- ( ( ph /\ K e. N ) -> K C_ N )
35	26	adantr 276	. . 3 |- ( ( ph /\ K e. N ) -> -. K C_ N )
36	34, 35	pm2.21dd 623	. 2 |- ( ( ph /\ K e. N ) -> N e. K )
37		nntri3or 6639	. . 3 |- ( ( N e. om /\ K e. om ) -> ( N e. K \/ N = K \/ K e. N ) )
38	12, 10, 37	syl2anc 411	. 2 |- ( ph -> ( N e. K \/ N = K \/ K e. N ) )
39	1, 28, 36, 38	mpjao3dan 1341	1 |- ( ph -> N e. K )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105   \/ w3o 1001   = wceq 1395   e. wcel 2200   =/= wne 2400   A.wral 2508   C_ wss 3197   Ord word 4453   Oncon0 4454   suc csuc 4456   omcom 4682   -onto->wfo 5316   ` cfv 5318

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-sep 4202  ax-nul 4210  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-iinf 4680

This theorem depends on definitions:  df-bi 117  df-3or 1003  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-v 2801  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-br 4084  df-tr 4183  df-iord 4457  df-on 4459  df-suc 4462  df-iom 4683  df-iota 5278  df-fv 5326

This theorem is referenced by:  ennnfonelemex  12985