Theorem climge0 11948

Description: A nonnegative sequence converges to a nonnegative number. (Contributed by NM, 11-Sep-2005.)

Hypotheses

Ref	Expression
climrecl.1	|- Z = ( ZZ>= ` M )
climrecl.2	|- ( ph -> M e. ZZ )
climrecl.3	|- ( ph -> F ~~> A )
climrecl.4	|- ( ( ph /\ k e. Z ) -> ( F ` k ) e. RR )
climge0.5	|- ( ( ph /\ k e. Z ) -> 0 <_ ( F ` k ) )

Assertion

Ref	Expression
climge0	|- ( ph -> 0 <_ A )

Distinct variable groups:   k, F   k, M   ph, k   k, Z   A, k

Proof of Theorem climge0

Dummy variable j is distinct from all other variables.

Step	Hyp	Ref	Expression
1		climrecl.1	. . . . . 6 |- Z = ( ZZ>= ` M )
2		climrecl.2	. . . . . . 7 |- ( ph -> M e. ZZ )
3	2	adantr 276	. . . . . 6 |- ( ( ph /\ A < 0 ) -> M e. ZZ )
4		climrecl.3	. . . . . . . . . 10 |- ( ph -> F ~~> A )
5		climrecl.4	. . . . . . . . . 10 |- ( ( ph /\ k e. Z ) -> ( F ` k ) e. RR )
6	1, 2, 4, 5	climrecl 11947	. . . . . . . . 9 |- ( ph -> A e. RR )
7	6	adantr 276	. . . . . . . 8 |- ( ( ph /\ A < 0 ) -> A e. RR )
8	7	renegcld 8601	. . . . . . 7 |- ( ( ph /\ A < 0 ) -> -u A e. RR )
9	6	lt0neg1d 8737	. . . . . . . 8 |- ( ph -> ( A < 0 <-> 0 < -u A ) )
10	9	biimpa 296	. . . . . . 7 |- ( ( ph /\ A < 0 ) -> 0 < -u A )
11	8, 10	elrpd 9972	. . . . . 6 |- ( ( ph /\ A < 0 ) -> -u A e. RR+ )
12		eqidd 2232	. . . . . 6 |- ( ( ( ph /\ A < 0 ) /\ k e. Z ) -> ( F ` k ) = ( F ` k ) )
13	4	adantr 276	. . . . . 6 |- ( ( ph /\ A < 0 ) -> F ~~> A )
14	1, 3, 11, 12, 13	climi2 11911	. . . . 5 |- ( ( ph /\ A < 0 ) -> E. j e. Z A. k e. ( ZZ>= ` j ) ( abs ` ( ( F ` k ) - A ) ) < -u A )
15	1	r19.2uz 11616	. . . . 5 |- ( E. j e. Z A. k e. ( ZZ>= ` j ) ( abs ` ( ( F ` k ) - A ) ) < -u A -> E. k e. Z ( abs ` ( ( F ` k ) - A ) ) < -u A )
16	14, 15	syl 14	. . . 4 |- ( ( ph /\ A < 0 ) -> E. k e. Z ( abs ` ( ( F ` k ) - A ) ) < -u A )
17		simprr 533	. . . . . . . 8 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( abs ` ( ( F ` k ) - A ) ) < -u A )
18	5	ad2ant2r 509	. . . . . . . . 9 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( F ` k ) e. RR )
19	7	adantr 276	. . . . . . . . 9 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> A e. RR )
20	8	adantr 276	. . . . . . . . 9 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> -u A e. RR )
21	18, 19, 20	absdifltd 11801	. . . . . . . 8 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( ( abs ` ( ( F ` k ) - A ) ) < -u A <-> ( ( A - -u A ) < ( F ` k ) /\ ( F ` k ) < ( A + -u A ) ) ) )
22	17, 21	mpbid 147	. . . . . . 7 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( ( A - -u A ) < ( F ` k ) /\ ( F ` k ) < ( A + -u A ) ) )
23	22	simprd 114	. . . . . 6 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( F ` k ) < ( A + -u A ) )
24	19	recnd 8250	. . . . . . 7 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> A e. CC )
25	24	negidd 8522	. . . . . 6 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( A + -u A ) = 0 )
26	23, 25	breqtrd 4119	. . . . 5 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( F ` k ) < 0 )
27		climge0.5	. . . . . . 7 |- ( ( ph /\ k e. Z ) -> 0 <_ ( F ` k ) )
28	27	ad2ant2r 509	. . . . . 6 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> 0 <_ ( F ` k ) )
29		0red 8223	. . . . . . 7 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> 0 e. RR )
30	29, 18	lenltd 8339	. . . . . 6 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> ( 0 <_ ( F ` k ) <-> -. ( F ` k ) < 0 ) )
31	28, 30	mpbid 147	. . . . 5 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> -. ( F ` k ) < 0 )
32	26, 31	pm2.21fal 1418	. . . 4 |- ( ( ( ph /\ A < 0 ) /\ ( k e. Z /\ ( abs ` ( ( F ` k ) - A ) ) < -u A ) ) -> F. )
33	16, 32	rexlimddv 2656	. . 3 |- ( ( ph /\ A < 0 ) -> F. )
34	33	inegd 1417	. 2 |- ( ph -> -. A < 0 )
35		0re 8222	. . 3 |- 0 e. RR
36		lenlt 8297	. . 3 |- ( ( 0 e. RR /\ A e. RR ) -> ( 0 <_ A <-> -. A < 0 ) )
37	35, 6, 36	sylancr 414	. 2 |- ( ph -> ( 0 <_ A <-> -. A < 0 ) )
38	34, 37	mpbird 167	1 |- ( ph -> 0 <_ A )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1398   F. wfal 1403   e. wcel 2202   A.wral 2511   E.wrex 2512   class class class wbr 4093   ` cfv 5333  (class class class)co 6028   RRcr 8074   0cc0 8075   + caddc 8078   < clt 8256   <_ cle 8257   - cmin 8392   -ucneg 8393   ZZcz 9523   ZZ>=cuz 9799   abscabs 11620   ~~> cli 11901

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4209  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-iinf 4692  ax-cnex 8166  ax-resscn 8167  ax-1cn 8168  ax-1re 8169  ax-icn 8170  ax-addcl 8171  ax-addrcl 8172  ax-mulcl 8173  ax-mulrcl 8174  ax-addcom 8175  ax-mulcom 8176  ax-addass 8177  ax-mulass 8178  ax-distr 8179  ax-i2m1 8180  ax-0lt1 8181  ax-1rid 8182  ax-0id 8183  ax-rnegex 8184  ax-precex 8185  ax-cnre 8186  ax-pre-ltirr 8187  ax-pre-ltwlin 8188  ax-pre-lttrn 8189  ax-pre-apti 8190  ax-pre-ltadd 8191  ax-pre-mulgt0 8192  ax-pre-mulext 8193  ax-arch 8194  ax-caucvg 8195

This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-nel 2499  df-ral 2516  df-rex 2517  df-reu 2518  df-rmo 2519  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-if 3608  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-tr 4193  df-id 4396  df-po 4399  df-iso 4400  df-iord 4469  df-on 4471  df-ilim 4472  df-suc 4474  df-iom 4695  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-riota 5981  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-frec 6600  df-pnf 8258  df-mnf 8259  df-xr 8260  df-ltxr 8261  df-le 8262  df-sub 8394  df-neg 8395  df-reap 8797  df-ap 8804  df-div 8895  df-inn 9186  df-2 9244  df-3 9245  df-4 9246  df-n0 9445  df-z 9524  df-uz 9800  df-rp 9933  df-seqfrec 10756  df-exp 10847  df-cj 11465  df-re 11466  df-im 11467  df-rsqrt 11621  df-abs 11622  df-clim 11902

This theorem is referenced by:  climle  11957