Theorem prsrriota 7903

Description: Mapping a restricted iota from a positive real to a signed real. (Contributed by Jim Kingdon, 29-Jun-2021.)

Assertion

Ref	Expression
prsrriota	|- ( ( A e. R. /\ 0R <R A ) -> [ <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. ] ~R = A )

Distinct variable group:   x, A

Proof of Theorem prsrriota

Dummy variable y is distinct from all other variables.

Step	Hyp	Ref	Expression
1		srpospr 7898	. . 3 |- ( ( A e. R. /\ 0R <R A ) -> E! y e. P. [ <. ( y +P. 1P ) , 1P >. ] ~R = A )
2		reurex 2724	. . 3 |- ( E! y e. P. [ <. ( y +P. 1P ) , 1P >. ] ~R = A -> E. y e. P. [ <. ( y +P. 1P ) , 1P >. ] ~R = A )
3	1, 2	syl 14	. 2 |- ( ( A e. R. /\ 0R <R A ) -> E. y e. P. [ <. ( y +P. 1P ) , 1P >. ] ~R = A )
4		simprr 531	. . . . 5 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> [ <. ( y +P. 1P ) , 1P >. ] ~R = A )
5		simprl 529	. . . . . 6 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> y e. P. )
6		srpospr 7898	. . . . . . 7 |- ( ( A e. R. /\ 0R <R A ) -> E! x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A )
7	6	adantr 276	. . . . . 6 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> E! x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A )
8		oveq1 5953	. . . . . . . . . 10 |- ( x = y -> ( x +P. 1P ) = ( y +P. 1P ) )
9	8	opeq1d 3825	. . . . . . . . 9 |- ( x = y -> <. ( x +P. 1P ) , 1P >. = <. ( y +P. 1P ) , 1P >. )
10	9	eceq1d 6658	. . . . . . . 8 |- ( x = y -> [ <. ( x +P. 1P ) , 1P >. ] ~R = [ <. ( y +P. 1P ) , 1P >. ] ~R )
11	10	eqeq1d 2214	. . . . . . 7 |- ( x = y -> ( [ <. ( x +P. 1P ) , 1P >. ] ~R = A <-> [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) )
12	11	riota2 5924	. . . . . 6 |- ( ( y e. P. /\ E! x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) -> ( [ <. ( y +P. 1P ) , 1P >. ] ~R = A <-> ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y ) )
13	5, 7, 12	syl2anc 411	. . . . 5 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> ( [ <. ( y +P. 1P ) , 1P >. ] ~R = A <-> ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y ) )
14	4, 13	mpbid 147	. . . 4 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y )
15		oveq1 5953	. . . . . 6 |- ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y -> ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) = ( y +P. 1P ) )
16	15	opeq1d 3825	. . . . 5 |- ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y -> <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. = <. ( y +P. 1P ) , 1P >. )
17	16	eceq1d 6658	. . . 4 |- ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) = y -> [ <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. ] ~R = [ <. ( y +P. 1P ) , 1P >. ] ~R )
18	14, 17	syl 14	. . 3 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> [ <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. ] ~R = [ <. ( y +P. 1P ) , 1P >. ] ~R )
19	18, 4	eqtrd 2238	. 2 |- ( ( ( A e. R. /\ 0R <R A ) /\ ( y e. P. /\ [ <. ( y +P. 1P ) , 1P >. ] ~R = A ) ) -> [ <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. ] ~R = A )
20	3, 19	rexlimddv 2628	1 |- ( ( A e. R. /\ 0R <R A ) -> [ <. ( ( iota_ x e. P. [ <. ( x +P. 1P ) , 1P >. ] ~R = A ) +P. 1P ) , 1P >. ] ~R = A )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1373   e. wcel 2176   E.wrex 2485   E!wreu 2486   <.cop 3636   class class class wbr 4045   iota_crio 5900  (class class class)co 5946   [cec 6620   P.cnp 7406   1Pc1p 7407   +P. cpp 7408   ~R cer 7411   R.cnr 7412   0Rc0r 7413   <R cltr 7418

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 711  ax-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-10 1528  ax-11 1529  ax-i12 1530  ax-bndl 1532  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-13 2178  ax-14 2179  ax-ext 2187  ax-coll 4160  ax-sep 4163  ax-nul 4171  ax-pow 4219  ax-pr 4254  ax-un 4481  ax-setind 4586  ax-iinf 4637

This theorem depends on definitions:  df-bi 117  df-dc 837  df-3or 982  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1484  df-sb 1786  df-eu 2057  df-mo 2058  df-clab 2192  df-cleq 2198  df-clel 2201  df-nfc 2337  df-ne 2377  df-ral 2489  df-rex 2490  df-reu 2491  df-rmo 2492  df-rab 2493  df-v 2774  df-sbc 2999  df-csb 3094  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3461  df-pw 3618  df-sn 3639  df-pr 3640  df-op 3642  df-uni 3851  df-int 3886  df-iun 3929  df-br 4046  df-opab 4107  df-mpt 4108  df-tr 4144  df-eprel 4337  df-id 4341  df-po 4344  df-iso 4345  df-iord 4414  df-on 4416  df-suc 4419  df-iom 4640  df-xp 4682  df-rel 4683  df-cnv 4684  df-co 4685  df-dm 4686  df-rn 4687  df-res 4688  df-ima 4689  df-iota 5233  df-fun 5274  df-fn 5275  df-f 5276  df-f1 5277  df-fo 5278  df-f1o 5279  df-fv 5280  df-riota 5901  df-ov 5949  df-oprab 5950  df-mpo 5951  df-1st 6228  df-2nd 6229  df-recs 6393  df-irdg 6458  df-1o 6504  df-2o 6505  df-oadd 6508  df-omul 6509  df-er 6622  df-ec 6624  df-qs 6628  df-ni 7419  df-pli 7420  df-mi 7421  df-lti 7422  df-plpq 7459  df-mpq 7460  df-enq 7462  df-nqqs 7463  df-plqqs 7464  df-mqqs 7465  df-1nqqs 7466  df-rq 7467  df-ltnqqs 7468  df-enq0 7539  df-nq0 7540  df-0nq0 7541  df-plq0 7542  df-mq0 7543  df-inp 7581  df-i1p 7582  df-iplp 7583  df-iltp 7585  df-enr 7841  df-nr 7842  df-ltr 7845  df-0r 7846

This theorem is referenced by:  caucvgsrlemfv  7906  caucvgsrlemgt1  7910