Theorem reeff1oleme 15486

Description: Lemma for reeff1o 15487. (Contributed by Jim Kingdon, 15-May-2024.)

Assertion

Ref	Expression
reeff1oleme	|- ( U e. ( 0 (,) _e ) -> E. x e. RR ( exp ` x ) = U )

Distinct variable group:   x, U

Proof of Theorem reeff1oleme

Dummy variable y is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ere 12221	. . . . 5 |- _e e. RR
2	1	a1i 9	. . . 4 |- ( U e. ( 0 (,) _e ) -> _e e. RR )
3		elioore 10137	. . . 4 |- ( U e. ( 0 (,) _e ) -> U e. RR )
4		0xr 8216	. . . . . . 7 |- 0 e. RR*
5	1	rexri 8227	. . . . . . 7 |- _e e. RR*
6		elioo2 10146	. . . . . . 7 |- ( ( 0 e. RR* /\ _e e. RR* ) -> ( U e. ( 0 (,) _e ) <-> ( U e. RR /\ 0 < U /\ U < _e ) ) )
7	4, 5, 6	mp2an 426	. . . . . 6 |- ( U e. ( 0 (,) _e ) <-> ( U e. RR /\ 0 < U /\ U < _e ) )
8	7	simp2bi 1037	. . . . 5 |- ( U e. ( 0 (,) _e ) -> 0 < U )
9	3, 8	gt0ap0d 8799	. . . 4 |- ( U e. ( 0 (,) _e ) -> U # 0 )
10	2, 3, 9	redivclapd 9005	. . 3 |- ( U e. ( 0 (,) _e ) -> ( _e / U ) e. RR )
11	3	recnd 8198	. . . . . 6 |- ( U e. ( 0 (,) _e ) -> U e. CC )
12	11	mulid2d 8188	. . . . 5 |- ( U e. ( 0 (,) _e ) -> ( 1 x. U ) = U )
13	7	simp3bi 1038	. . . . 5 |- ( U e. ( 0 (,) _e ) -> U < _e )
14	12, 13	eqbrtrd 4108	. . . 4 |- ( U e. ( 0 (,) _e ) -> ( 1 x. U ) < _e )
15		1red 8184	. . . . 5 |- ( U e. ( 0 (,) _e ) -> 1 e. RR )
16		ltmuldiv 9044	. . . . 5 |- ( ( 1 e. RR /\ _e e. RR /\ ( U e. RR /\ 0 < U ) ) -> ( ( 1 x. U ) < _e <-> 1 < ( _e / U ) ) )
17	15, 2, 3, 8, 16	syl112anc 1275	. . . 4 |- ( U e. ( 0 (,) _e ) -> ( ( 1 x. U ) < _e <-> 1 < ( _e / U ) ) )
18	14, 17	mpbid 147	. . 3 |- ( U e. ( 0 (,) _e ) -> 1 < ( _e / U ) )
19		reeff1olem 15485	. . 3 |- ( ( ( _e / U ) e. RR /\ 1 < ( _e / U ) ) -> E. y e. RR ( exp ` y ) = ( _e / U ) )
20	10, 18, 19	syl2anc 411	. 2 |- ( U e. ( 0 (,) _e ) -> E. y e. RR ( exp ` y ) = ( _e / U ) )
21		1red 8184	. . . 4 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> 1 e. RR )
22		simprl 529	. . . 4 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> y e. RR )
23	21, 22	resubcld 8550	. . 3 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( 1 - y ) e. RR )
24		1cnd 8185	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> 1 e. CC )
25	22	recnd 8198	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> y e. CC )
26		efsub 12232	. . . . 5 |- ( ( 1 e. CC /\ y e. CC ) -> ( exp ` ( 1 - y ) ) = ( ( exp ` 1 ) / ( exp ` y ) ) )
27	24, 25, 26	syl2anc 411	. . . 4 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` ( 1 - y ) ) = ( ( exp ` 1 ) / ( exp ` y ) ) )
28		simprr 531	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) = ( _e / U ) )
29		df-e 12200	. . . . . . . 8 |- _e = ( exp ` 1 )
30	29	oveq1i 6023	. . . . . . 7 |- ( _e / U ) = ( ( exp ` 1 ) / U )
31	28, 30	eqtr2di 2279	. . . . . 6 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( ( exp ` 1 ) / U ) = ( exp ` y ) )
32		efcl 12215	. . . . . . . 8 |- ( 1 e. CC -> ( exp ` 1 ) e. CC )
33	24, 32	syl 14	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` 1 ) e. CC )
34		efcl 12215	. . . . . . . 8 |- ( y e. CC -> ( exp ` y ) e. CC )
35	25, 34	syl 14	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) e. CC )
36	11	adantr 276	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> U e. CC )
37	9	adantr 276	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> U # 0 )
38	33, 35, 36, 37	divmulap2d 8994	. . . . . 6 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( ( ( exp ` 1 ) / U ) = ( exp ` y ) <-> ( exp ` 1 ) = ( U x. ( exp ` y ) ) ) )
39	31, 38	mpbid 147	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` 1 ) = ( U x. ( exp ` y ) ) )
40	22	rpefcld 12237	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) e. RR+ )
41	40	rpap0d 9927	. . . . . 6 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) # 0 )
42	33, 36, 35, 41	divmulap3d 8995	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( ( ( exp ` 1 ) / ( exp ` y ) ) = U <-> ( exp ` 1 ) = ( U x. ( exp ` y ) ) ) )
43	39, 42	mpbird 167	. . . 4 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( ( exp ` 1 ) / ( exp ` y ) ) = U )
44	27, 43	eqtrd 2262	. . 3 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` ( 1 - y ) ) = U )
45		fveqeq2 5644	. . . 4 |- ( x = ( 1 - y ) -> ( ( exp ` x ) = U <-> ( exp ` ( 1 - y ) ) = U ) )
46	45	rspcev 2908	. . 3 |- ( ( ( 1 - y ) e. RR /\ ( exp ` ( 1 - y ) ) = U ) -> E. x e. RR ( exp ` x ) = U )
47	23, 44, 46	syl2anc 411	. 2 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> E. x e. RR ( exp ` x ) = U )
48	20, 47	rexlimddv 2653	1 |- ( U e. ( 0 (,) _e ) -> E. x e. RR ( exp ` x ) = U )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 1002   = wceq 1395   e. wcel 2200   E.wrex 2509   class class class wbr 4086   ` cfv 5324  (class class class)co 6013   CCcc 8020   RRcr 8021   0cc0 8022   1c1 8023   x. cmul 8027   RR*cxr 8203   < clt 8204   - cmin 8340   # cap 8751   / cdiv 8842   (,)cioo 10113   expce 12193   _eceu 12194

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 4202  ax-sep 4205  ax-nul 4213  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-iinf 4684  ax-cnex 8113  ax-resscn 8114  ax-1cn 8115  ax-1re 8116  ax-icn 8117  ax-addcl 8118  ax-addrcl 8119  ax-mulcl 8120  ax-mulrcl 8121  ax-addcom 8122  ax-mulcom 8123  ax-addass 8124  ax-mulass 8125  ax-distr 8126  ax-i2m1 8127  ax-0lt1 8128  ax-1rid 8129  ax-0id 8130  ax-rnegex 8131  ax-precex 8132  ax-cnre 8133  ax-pre-ltirr 8134  ax-pre-ltwlin 8135  ax-pre-lttrn 8136  ax-pre-apti 8137  ax-pre-ltadd 8138  ax-pre-mulgt0 8139  ax-pre-mulext 8140  ax-arch 8141  ax-caucvg 8142  ax-pre-suploc 8143  ax-addf 8144  ax-mulf 8145

This theorem depends on definitions:  df-bi 117  df-stab 836  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-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rmo 2516  df-rab 2517  df-v 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-nul 3493  df-if 3604  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-iun 3970  df-disj 4063  df-br 4087  df-opab 4149  df-mpt 4150  df-tr 4186  df-id 4388  df-po 4391  df-iso 4392  df-iord 4461  df-on 4463  df-ilim 4464  df-suc 4466  df-iom 4687  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-f1 5329  df-fo 5330  df-f1o 5331  df-fv 5332  df-isom 5333  df-riota 5966  df-ov 6016  df-oprab 6017  df-mpo 6018  df-of 6230  df-1st 6298  df-2nd 6299  df-recs 6466  df-irdg 6531  df-frec 6552  df-1o 6577  df-oadd 6581  df-er 6697  df-map 6814  df-pm 6815  df-en 6905  df-dom 6906  df-fin 6907  df-sup 7174  df-inf 7175  df-pnf 8206  df-mnf 8207  df-xr 8208  df-ltxr 8209  df-le 8210  df-sub 8342  df-neg 8343  df-reap 8745  df-ap 8752  df-div 8843  df-inn 9134  df-2 9192  df-3 9193  df-4 9194  df-n0 9393  df-z 9470  df-uz 9746  df-q 9844  df-rp 9879  df-xneg 9997  df-xadd 9998  df-ioo 10117  df-ico 10119  df-icc 10120  df-fz 10234  df-fzo 10368  df-seqfrec 10700  df-exp 10791  df-fac 10978  df-bc 11000  df-ihash 11028  df-shft 11366  df-cj 11393  df-re 11394  df-im 11395  df-rsqrt 11549  df-abs 11550  df-clim 11830  df-sumdc 11905  df-ef 12199  df-e 12200  df-rest 13314  df-topgen 13333  df-psmet 14547  df-xmet 14548  df-met 14549  df-bl 14550  df-mopn 14551  df-top 14712  df-topon 14725  df-bases 14757  df-ntr 14810  df-cn 14902  df-cnp 14903  df-tx 14967  df-cncf 15285  df-limced 15370  df-dvap 15371

This theorem is referenced by:  reeff1o  15487