Theorem eldvap 15432

Description: The differentiable predicate. A function F is differentiable at B with derivative C iff F is defined in a neighborhood of B and the difference quotient has limit C at B. (Contributed by Mario Carneiro, 7-Aug-2014.) (Revised by Jim Kingdon, 27-Jun-2023.)

Hypotheses

Ref	Expression
dvval.t	|- T = ( K ↾t S )
dvval.k	|- K = ( MetOpen ` ( abs o. - ) )
eldvap.g	|- G = ( z e. { w e. A | w # B } |-> ( ( ( F ` z ) - ( F ` B ) ) / ( z - B ) ) )
eldv.s	|- ( ph -> S C_ CC )
eldv.f	|- ( ph -> F : A --> CC )
eldv.a	|- ( ph -> A C_ S )

Assertion

Ref	Expression
eldvap	|- ( ph -> ( B ( S _D F ) C <-> ( B e. ( ( int ` T ) ` A ) /\ C e. ( G lim CC B ) ) ) )

Distinct variable groups:   w, A, z   w, F, z   w, S, z   z, B, w

Allowed substitution hints:   ph( z, w)   C( z, w)   T( z, w)   G( z, w)   K( z, w)

Proof of Theorem eldvap

Dummy variable x is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eldv.s	. . . . 5 |- ( ph -> S C_ CC )
2		eldv.f	. . . . 5 |- ( ph -> F : A --> CC )
3		eldv.a	. . . . 5 |- ( ph -> A C_ S )
4		dvval.t	. . . . . 6 |- T = ( K ↾t S )
5		dvval.k	. . . . . 6 |- K = ( MetOpen ` ( abs o. - ) )
6	4, 5	dvfvalap 15431	. . . . 5 |- ( ( S C_ CC /\ F : A --> CC /\ A C_ S ) -> ( ( S _D F ) = U_ x e. ( ( int ` T ) ` A ) ( { x } X. ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) ) /\ ( S _D F ) C_ ( ( ( int ` T ) ` A ) X. CC ) ) )
7	1, 2, 3, 6	syl3anc 1273	. . . 4 |- ( ph -> ( ( S _D F ) = U_ x e. ( ( int ` T ) ` A ) ( { x } X. ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) ) /\ ( S _D F ) C_ ( ( ( int ` T ) ` A ) X. CC ) ) )
8	7	simpld 112	. . 3 |- ( ph -> ( S _D F ) = U_ x e. ( ( int ` T ) ` A ) ( { x } X. ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) ) )
9	8	eleq2d 2300	. 2 |- ( ph -> ( <. B , C >. e. ( S _D F ) <-> <. B , C >. e. U_ x e. ( ( int ` T ) ` A ) ( { x } X. ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) ) ) )
10		df-br 4088	. . 3 |- ( B ( S _D F ) C <-> <. B , C >. e. ( S _D F ) )
11	10	bicomi 132	. 2 |- ( <. B , C >. e. ( S _D F ) <-> B ( S _D F ) C )
12		breq2 4091	. . . . . . 7 |- ( x = B -> ( w # x <-> w # B ) )
13	12	rabbidv 2790	. . . . . 6 |- ( x = B -> { w e. A | w # x } = { w e. A | w # B } )
14		fveq2 5639	. . . . . . . 8 |- ( x = B -> ( F ` x ) = ( F ` B ) )
15	14	oveq2d 6036	. . . . . . 7 |- ( x = B -> ( ( F ` z ) - ( F ` x ) ) = ( ( F ` z ) - ( F ` B ) ) )
16		oveq2 6028	. . . . . . 7 |- ( x = B -> ( z - x ) = ( z - B ) )
17	15, 16	oveq12d 6038	. . . . . 6 |- ( x = B -> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) = ( ( ( F ` z ) - ( F ` B ) ) / ( z - B ) ) )
18	13, 17	mpteq12dv 4170	. . . . 5 |- ( x = B -> ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) = ( z e. { w e. A | w # B } |-> ( ( ( F ` z ) - ( F ` B ) ) / ( z - B ) ) ) )
19		eldvap.g	. . . . 5 |- G = ( z e. { w e. A | w # B } |-> ( ( ( F ` z ) - ( F ` B ) ) / ( z - B ) ) )
20	18, 19	eqtr4di 2281	. . . 4 |- ( x = B -> ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) = G )
21		id 19	. . . 4 |- ( x = B -> x = B )
22	20, 21	oveq12d 6038	. . 3 |- ( x = B -> ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) = ( G lim CC B ) )
23	22	opeliunxp2 4869	. 2 |- ( <. B , C >. e. U_ x e. ( ( int ` T ) ` A ) ( { x } X. ( ( z e. { w e. A | w # x } |-> ( ( ( F ` z ) - ( F ` x ) ) / ( z - x ) ) ) lim CC x ) ) <-> ( B e. ( ( int ` T ) ` A ) /\ C e. ( G lim CC B ) ) )
24	9, 11, 23	3bitr3g 222	1 |- ( ph -> ( B ( S _D F ) C <-> ( B e. ( ( int ` T ) ` A ) /\ C e. ( G lim CC B ) ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1397   e. wcel 2201   {crab 2513   C_ wss 3199   {csn 3668   <.cop 3671   U_ciun 3969   class class class wbr 4087   |-> cmpt 4149   X. cxp 4722   o. ccom 4728   -->wf 5321   ` cfv 5325  (class class class)co 6020   CCcc 8032   - cmin 8352   # cap 8763   / cdiv 8854   abscabs 11577   ↾_t crest 13342   MetOpencmopn 14576   intcnt 14843   lim CC climc 15404   _D cdv 15405

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 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2203  ax-14 2204  ax-ext 2212  ax-coll 4203  ax-sep 4206  ax-nul 4214  ax-pow 4263  ax-pr 4298  ax-un 4529  ax-setind 4634  ax-iinf 4685  ax-cnex 8125  ax-resscn 8126  ax-1cn 8127  ax-1re 8128  ax-icn 8129  ax-addcl 8130  ax-addrcl 8131  ax-mulcl 8132  ax-mulrcl 8133  ax-addcom 8134  ax-mulcom 8135  ax-addass 8136  ax-mulass 8137  ax-distr 8138  ax-i2m1 8139  ax-0lt1 8140  ax-1rid 8141  ax-0id 8142  ax-rnegex 8143  ax-precex 8144  ax-cnre 8145  ax-pre-ltirr 8146  ax-pre-ltwlin 8147  ax-pre-lttrn 8148  ax-pre-apti 8149  ax-pre-ltadd 8150  ax-pre-mulgt0 8151  ax-pre-mulext 8152  ax-arch 8153  ax-caucvg 8154

This theorem depends on definitions:  df-bi 117  df-stab 838  df-dc 842  df-3or 1005  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1810  df-eu 2081  df-mo 2082  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-ne 2402  df-nel 2497  df-ral 2514  df-rex 2515  df-reu 2516  df-rmo 2517  df-rab 2518  df-v 2803  df-sbc 3031  df-csb 3127  df-dif 3201  df-un 3203  df-in 3205  df-ss 3212  df-nul 3494  df-if 3605  df-pw 3653  df-sn 3674  df-pr 3675  df-op 3677  df-uni 3893  df-int 3928  df-iun 3971  df-br 4088  df-opab 4150  df-mpt 4151  df-tr 4187  df-id 4389  df-po 4392  df-iso 4393  df-iord 4462  df-on 4464  df-ilim 4465  df-suc 4467  df-iom 4688  df-xp 4730  df-rel 4731  df-cnv 4732  df-co 4733  df-dm 4734  df-rn 4735  df-res 4736  df-ima 4737  df-iota 5285  df-fun 5327  df-fn 5328  df-f 5329  df-f1 5330  df-fo 5331  df-f1o 5332  df-fv 5333  df-isom 5334  df-riota 5973  df-ov 6023  df-oprab 6024  df-mpo 6025  df-1st 6305  df-2nd 6306  df-recs 6473  df-frec 6559  df-map 6821  df-pm 6822  df-sup 7185  df-inf 7186  df-pnf 8218  df-mnf 8219  df-xr 8220  df-ltxr 8221  df-le 8222  df-sub 8354  df-neg 8355  df-reap 8757  df-ap 8764  df-div 8855  df-inn 9146  df-2 9204  df-3 9205  df-4 9206  df-n0 9405  df-z 9482  df-uz 9758  df-q 9856  df-rp 9891  df-xneg 10009  df-xadd 10010  df-seqfrec 10713  df-exp 10804  df-cj 11422  df-re 11423  df-im 11424  df-rsqrt 11578  df-abs 11579  df-rest 13344  df-topgen 13363  df-psmet 14578  df-xmet 14579  df-met 14580  df-bl 14581  df-mopn 14582  df-top 14748  df-topon 14761  df-bases 14793  df-ntr 14846  df-limced 15406  df-dvap 15407

This theorem is referenced by:  dvcl  15433  dvfgg  15438  dvidlemap  15441  dvidrelem  15442  dvidsslem  15443  dvcnp2cntop  15449  dvaddxxbr  15451  dvmulxxbr  15452  dvcoapbr  15457  dvcjbr  15458  dvrecap  15463  dveflem  15476