Theorem limsuplt2 39985

Description: The defining property of the superior limit. (Contributed by Glauco Siliprandi, 2-Jan-2022.)

Hypotheses

Ref	Expression
limsuplt2.1	|- ( ph -> B C_ RR )
limsuplt2.2	|- ( ph -> F : B --> RR* )
limsuplt2.3	|- ( ph -> A e. RR* )

Assertion

Ref	Expression
limsuplt2	|- ( ph -> ( ( limsup ` F ) < A <-> E. k e. RR sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )

Distinct variable groups:   A, k   k, F

Allowed substitution hints:   ph( k)   B( k)

Proof of Theorem limsuplt2

Dummy variables i j are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		limsuplt2.1	. . 3 |- ( ph -> B C_ RR )
2		limsuplt2.2	. . 3 |- ( ph -> F : B --> RR* )
3		limsuplt2.3	. . 3 |- ( ph -> A e. RR* )
4		eqid 2622	. . . 4 |- ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) = ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) )
5	4	limsuplt 14210	. . 3 |- ( ( B C_ RR /\ F : B --> RR* /\ A e. RR* ) -> ( ( limsup ` F ) < A <-> E. i e. RR ( ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) ` i ) < A ) )
6	1, 2, 3, 5	syl3anc 1326	. 2 |- ( ph -> ( ( limsup ` F ) < A <-> E. i e. RR ( ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) ` i ) < A ) )
7		oveq1 6657	. . . . . . . 8 |- ( j = i -> ( j [,) +oo ) = ( i [,) +oo ) )
8	7	imaeq2d 5466	. . . . . . 7 |- ( j = i -> ( F " ( j [,) +oo ) ) = ( F " ( i [,) +oo ) ) )
9	8	ineq1d 3813	. . . . . 6 |- ( j = i -> ( ( F " ( j [,) +oo ) ) i^i RR* ) = ( ( F " ( i [,) +oo ) ) i^i RR* ) )
10	9	supeq1d 8352	. . . . 5 |- ( j = i -> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) = sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) )
11		simpr 477	. . . . 5 |- ( ( ph /\ i e. RR ) -> i e. RR )
12		xrltso 11974	. . . . . . 7 |- < Or RR*
13	12	supex 8369	. . . . . 6 |- sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) e. _V
14	13	a1i 11	. . . . 5 |- ( ( ph /\ i e. RR ) -> sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) e. _V )
15	4, 10, 11, 14	fvmptd3 39447	. . . 4 |- ( ( ph /\ i e. RR ) -> ( ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) ` i ) = sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) )
16	15	breq1d 4663	. . 3 |- ( ( ph /\ i e. RR ) -> ( ( ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) ` i ) < A <-> sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )
17	16	rexbidva 3049	. 2 |- ( ph -> ( E. i e. RR ( ( j e. RR |-> sup ( ( ( F " ( j [,) +oo ) ) i^i RR* ) , RR* , < ) ) ` i ) < A <-> E. i e. RR sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )
18		oveq1 6657	. . . . . . . 8 |- ( i = k -> ( i [,) +oo ) = ( k [,) +oo ) )
19	18	imaeq2d 5466	. . . . . . 7 |- ( i = k -> ( F " ( i [,) +oo ) ) = ( F " ( k [,) +oo ) ) )
20	19	ineq1d 3813	. . . . . 6 |- ( i = k -> ( ( F " ( i [,) +oo ) ) i^i RR* ) = ( ( F " ( k [,) +oo ) ) i^i RR* ) )
21	20	supeq1d 8352	. . . . 5 |- ( i = k -> sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) = sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) )
22	21	breq1d 4663	. . . 4 |- ( i = k -> ( sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) < A <-> sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )
23	22	cbvrexv 3172	. . 3 |- ( E. i e. RR sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) < A <-> E. k e. RR sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) < A )
24	23	a1i 11	. 2 |- ( ph -> ( E. i e. RR sup ( ( ( F " ( i [,) +oo ) ) i^i RR* ) , RR* , < ) < A <-> E. k e. RR sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )
25	6, 17, 24	3bitrd 294	1 |- ( ph -> ( ( limsup ` F ) < A <-> E. k e. RR sup ( ( ( F " ( k [,) +oo ) ) i^i RR* ) , RR* , < ) < A ) )

Syntax hints:   -> wi 4   <-> wb 196   /\ wa 384   = wceq 1483   e. wcel 1990   E.wrex 2913   _Vcvv 3200   i^i cin 3573   C_ wss 3574   class class class wbr 4653   |-> cmpt 4729   "cima 5117   -->wf 5884   ` cfv 5888  (class class class)co 6650   supcsup 8346   RRcr 9935   +oocpnf 10071   RR*cxr 10073   < clt 10074   [,)cico 12177   limsupclsp 14201

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-po 5035  df-so 5036  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-sup 8348  df-inf 8349  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-limsup 14202

This theorem is referenced by: (None)