Theorem recvguniqlem 11020

Description: Lemma for recvguniq 11021. Some of the rearrangements of the expressions. (Contributed by Jim Kingdon, 8-Aug-2021.)

Hypotheses

Ref	Expression
recvguniqlem.f	|- ( ph -> F : NN --> RR )
recvguniqlem.a	|- ( ph -> A e. RR )
recvguniqlem.b	|- ( ph -> B e. RR )
recvguniqlem.k	|- ( ph -> K e. NN )
recvguniqlem.lt1	|- ( ph -> A < ( ( F ` K ) + ( ( A - B ) / 2 ) ) )
recvguniqlem.lt2	|- ( ph -> ( F ` K ) < ( B + ( ( A - B ) / 2 ) ) )

Assertion

Ref	Expression
recvguniqlem	|- ( ph -> F. )

Proof of Theorem recvguniqlem

Step	Hyp	Ref	Expression
1		recvguniqlem.a	. . 3 |- ( ph -> A e. RR )
2		recvguniqlem.f	. . . . 5 |- ( ph -> F : NN --> RR )
3		recvguniqlem.k	. . . . 5 |- ( ph -> K e. NN )
4	2, 3	ffvelcdmd 5667	. . . 4 |- ( ph -> ( F ` K ) e. RR )
5		recvguniqlem.b	. . . . . 6 |- ( ph -> B e. RR )
6	1, 5	resubcld 8355	. . . . 5 |- ( ph -> ( A - B ) e. RR )
7	6	rehalfcld 9182	. . . 4 |- ( ph -> ( ( A - B ) / 2 ) e. RR )
8	4, 7	readdcld 8004	. . 3 |- ( ph -> ( ( F ` K ) + ( ( A - B ) / 2 ) ) e. RR )
9		recvguniqlem.lt1	. . 3 |- ( ph -> A < ( ( F ` K ) + ( ( A - B ) / 2 ) ) )
10	5, 7	readdcld 8004	. . . . 5 |- ( ph -> ( B + ( ( A - B ) / 2 ) ) e. RR )
11		recvguniqlem.lt2	. . . . 5 |- ( ph -> ( F ` K ) < ( B + ( ( A - B ) / 2 ) ) )
12	4, 10, 7, 11	ltadd1dd 8530	. . . 4 |- ( ph -> ( ( F ` K ) + ( ( A - B ) / 2 ) ) < ( ( B + ( ( A - B ) / 2 ) ) + ( ( A - B ) / 2 ) ) )
13	5	recnd 8003	. . . . . 6 |- ( ph -> B e. CC )
14	7	recnd 8003	. . . . . 6 |- ( ph -> ( ( A - B ) / 2 ) e. CC )
15	13, 14, 14	addassd 7997	. . . . 5 |- ( ph -> ( ( B + ( ( A - B ) / 2 ) ) + ( ( A - B ) / 2 ) ) = ( B + ( ( ( A - B ) / 2 ) + ( ( A - B ) / 2 ) ) ) )
16	6	recnd 8003	. . . . . . 7 |- ( ph -> ( A - B ) e. CC )
17	16	2halvesd 9181	. . . . . 6 |- ( ph -> ( ( ( A - B ) / 2 ) + ( ( A - B ) / 2 ) ) = ( A - B ) )
18	17	oveq2d 5906	. . . . 5 |- ( ph -> ( B + ( ( ( A - B ) / 2 ) + ( ( A - B ) / 2 ) ) ) = ( B + ( A - B ) ) )
19	1	recnd 8003	. . . . . 6 |- ( ph -> A e. CC )
20	13, 19	pncan3d 8288	. . . . 5 |- ( ph -> ( B + ( A - B ) ) = A )
21	15, 18, 20	3eqtrd 2225	. . . 4 |- ( ph -> ( ( B + ( ( A - B ) / 2 ) ) + ( ( A - B ) / 2 ) ) = A )
22	12, 21	breqtrd 4043	. . 3 |- ( ph -> ( ( F ` K ) + ( ( A - B ) / 2 ) ) < A )
23	1, 8, 1, 9, 22	lttrd 8100	. 2 |- ( ph -> A < A )
24	1	ltnrd 8086	. 2 |- ( ph -> -. A < A )
25	23, 24	pm2.21fal 1383	1 |- ( ph -> F. )

Syntax hints:   -> wi 4   F. wfal 1368   e. wcel 2159   class class class wbr 4017   -->wf 5226   ` cfv 5230  (class class class)co 5890   RRcr 7827   + caddc 7831   < clt 8009   - cmin 8145   / cdiv 8646   NNcn 8936   2c2 8987

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 710  ax-5 1457  ax-7 1458  ax-gen 1459  ax-ie1 1503  ax-ie2 1504  ax-8 1514  ax-10 1515  ax-11 1516  ax-i12 1517  ax-bndl 1519  ax-4 1520  ax-17 1536  ax-i9 1540  ax-ial 1544  ax-i5r 1545  ax-13 2161  ax-14 2162  ax-ext 2170  ax-sep 4135  ax-pow 4188  ax-pr 4223  ax-un 4447  ax-setind 4550  ax-cnex 7919  ax-resscn 7920  ax-1cn 7921  ax-1re 7922  ax-icn 7923  ax-addcl 7924  ax-addrcl 7925  ax-mulcl 7926  ax-mulrcl 7927  ax-addcom 7928  ax-mulcom 7929  ax-addass 7930  ax-mulass 7931  ax-distr 7932  ax-i2m1 7933  ax-0lt1 7934  ax-1rid 7935  ax-0id 7936  ax-rnegex 7937  ax-precex 7938  ax-cnre 7939  ax-pre-ltirr 7940  ax-pre-ltwlin 7941  ax-pre-lttrn 7942  ax-pre-apti 7943  ax-pre-ltadd 7944  ax-pre-mulgt0 7945  ax-pre-mulext 7946

This theorem depends on definitions:  df-bi 117  df-3an 981  df-tru 1366  df-fal 1369  df-nf 1471  df-sb 1773  df-eu 2040  df-mo 2041  df-clab 2175  df-cleq 2181  df-clel 2184  df-nfc 2320  df-ne 2360  df-nel 2455  df-ral 2472  df-rex 2473  df-reu 2474  df-rmo 2475  df-rab 2476  df-v 2753  df-sbc 2977  df-dif 3145  df-un 3147  df-in 3149  df-ss 3156  df-pw 3591  df-sn 3612  df-pr 3613  df-op 3615  df-uni 3824  df-br 4018  df-opab 4079  df-id 4307  df-po 4310  df-iso 4311  df-xp 4646  df-rel 4647  df-cnv 4648  df-co 4649  df-dm 4650  df-rn 4651  df-iota 5192  df-fun 5232  df-fn 5233  df-f 5234  df-fv 5238  df-riota 5846  df-ov 5893  df-oprab 5894  df-mpo 5895  df-pnf 8011  df-mnf 8012  df-xr 8013  df-ltxr 8014  df-le 8015  df-sub 8147  df-neg 8148  df-reap 8549  df-ap 8556  df-div 8647  df-2 8995

This theorem is referenced by:  recvguniq  11021