Theorem reeff1oleme 15461

Description: Lemma for reeff1o 15462. (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 12196	. . . . 5 |- _e e. RR
2	1	a1i 9	. . . 4 |- ( U e. ( 0 (,) _e ) -> _e e. RR )
3		elioore 10120	. . . 4 |- ( U e. ( 0 (,) _e ) -> U e. RR )
4		0xr 8204	. . . . . . 7 |- 0 e. RR*
5	1	rexri 8215	. . . . . . 7 |- _e e. RR*
6		elioo2 10129	. . . . . . 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 8787	. . . 4 |- ( U e. ( 0 (,) _e ) -> U # 0 )
10	2, 3, 9	redivclapd 8993	. . 3 |- ( U e. ( 0 (,) _e ) -> ( _e / U ) e. RR )
11	3	recnd 8186	. . . . . 6 |- ( U e. ( 0 (,) _e ) -> U e. CC )
12	11	mulid2d 8176	. . . . 5 |- ( U e. ( 0 (,) _e ) -> ( 1 x. U ) = U )
13	7	simp3bi 1038	. . . . 5 |- ( U e. ( 0 (,) _e ) -> U < _e )
14	12, 13	eqbrtrd 4105	. . . 4 |- ( U e. ( 0 (,) _e ) -> ( 1 x. U ) < _e )
15		1red 8172	. . . . 5 |- ( U e. ( 0 (,) _e ) -> 1 e. RR )
16		ltmuldiv 9032	. . . . 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 15460	. . 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 8172	. . . 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 8538	. . 3 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( 1 - y ) e. RR )
24		1cnd 8173	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> 1 e. CC )
25	22	recnd 8186	. . . . 5 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> y e. CC )
26		efsub 12207	. . . . 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 12175	. . . . . . . 8 |- _e = ( exp ` 1 )
30	29	oveq1i 6017	. . . . . . 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 12190	. . . . . . . 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 12190	. . . . . . . 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 8982	. . . . . 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 12212	. . . . . . 7 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) e. RR+ )
41	40	rpap0d 9910	. . . . . 6 |- ( ( U e. ( 0 (,) _e ) /\ ( y e. RR /\ ( exp ` y ) = ( _e / U ) ) ) -> ( exp ` y ) # 0 )
42	33, 36, 35, 41	divmulap3d 8983	. . . . 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 5638	. . . 4 |- ( x = ( 1 - y ) -> ( ( exp ` x ) = U <-> ( exp ` ( 1 - y ) ) = U ) )
46	45	rspcev 2907	. . 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 4083   ` cfv 5318  (class class class)co 6007   CCcc 8008   RRcr 8009   0cc0 8010   1c1 8011   x. cmul 8015   RR*cxr 8191   < clt 8192   - cmin 8328   # cap 8739   / cdiv 8830   (,)cioo 10096   expce 12168   _eceu 12169

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  ax-cnex 8101  ax-resscn 8102  ax-1cn 8103  ax-1re 8104  ax-icn 8105  ax-addcl 8106  ax-addrcl 8107  ax-mulcl 8108  ax-mulrcl 8109  ax-addcom 8110  ax-mulcom 8111  ax-addass 8112  ax-mulass 8113  ax-distr 8114  ax-i2m1 8115  ax-0lt1 8116  ax-1rid 8117  ax-0id 8118  ax-rnegex 8119  ax-precex 8120  ax-cnre 8121  ax-pre-ltirr 8122  ax-pre-ltwlin 8123  ax-pre-lttrn 8124  ax-pre-apti 8125  ax-pre-ltadd 8126  ax-pre-mulgt0 8127  ax-pre-mulext 8128  ax-arch 8129  ax-caucvg 8130  ax-pre-suploc 8131  ax-addf 8132  ax-mulf 8133

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 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-nul 3492  df-if 3603  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-iun 3967  df-disj 4060  df-br 4084  df-opab 4146  df-mpt 4147  df-tr 4183  df-id 4384  df-po 4387  df-iso 4388  df-iord 4457  df-on 4459  df-ilim 4460  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-isom 5327  df-riota 5960  df-ov 6010  df-oprab 6011  df-mpo 6012  df-of 6224  df-1st 6292  df-2nd 6293  df-recs 6457  df-irdg 6522  df-frec 6543  df-1o 6568  df-oadd 6572  df-er 6688  df-map 6805  df-pm 6806  df-en 6896  df-dom 6897  df-fin 6898  df-sup 7162  df-inf 7163  df-pnf 8194  df-mnf 8195  df-xr 8196  df-ltxr 8197  df-le 8198  df-sub 8330  df-neg 8331  df-reap 8733  df-ap 8740  df-div 8831  df-inn 9122  df-2 9180  df-3 9181  df-4 9182  df-n0 9381  df-z 9458  df-uz 9734  df-q 9827  df-rp 9862  df-xneg 9980  df-xadd 9981  df-ioo 10100  df-ico 10102  df-icc 10103  df-fz 10217  df-fzo 10351  df-seqfrec 10682  df-exp 10773  df-fac 10960  df-bc 10982  df-ihash 11010  df-shft 11341  df-cj 11368  df-re 11369  df-im 11370  df-rsqrt 11524  df-abs 11525  df-clim 11805  df-sumdc 11880  df-ef 12174  df-e 12175  df-rest 13289  df-topgen 13308  df-psmet 14522  df-xmet 14523  df-met 14524  df-bl 14525  df-mopn 14526  df-top 14687  df-topon 14700  df-bases 14732  df-ntr 14785  df-cn 14877  df-cnp 14878  df-tx 14942  df-cncf 15260  df-limced 15345  df-dvap 15346

This theorem is referenced by:  reeff1o  15462