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Theorem infssuzledc 10495
Description: The infimum of a subset of an upper set of integers is less than or equal to all members of the subset. (Contributed by Jim Kingdon, 13-Jan-2022.)
Hypotheses
Ref Expression
infssuzledc.m  |-  ( ph  ->  M  e.  ZZ )
infssuzledc.s  |-  S  =  { n  e.  (
ZZ>= `  M )  |  ps }
infssuzledc.a  |-  ( ph  ->  A  e.  S )
infssuzledc.dc  |-  ( (
ph  /\  n  e.  ( M ... A ) )  -> DECID  ps )
Assertion
Ref Expression
infssuzledc  |-  ( ph  -> inf ( S ,  RR ,  <  )  <_  A
)
Distinct variable groups:    A, n    n, M    ph, n
Allowed substitution hints:    ps( n)    S( n)

Proof of Theorem infssuzledc
Dummy variables  y  a  b  x  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 lttri3 8259 . . . 4  |-  ( ( a  e.  RR  /\  b  e.  RR )  ->  ( a  =  b  <-> 
( -.  a  < 
b  /\  -.  b  <  a ) ) )
21adantl 277 . . 3  |-  ( (
ph  /\  ( a  e.  RR  /\  b  e.  RR ) )  -> 
( a  =  b  <-> 
( -.  a  < 
b  /\  -.  b  <  a ) ) )
3 infssuzledc.m . . . 4  |-  ( ph  ->  M  e.  ZZ )
4 infssuzledc.s . . . 4  |-  S  =  { n  e.  (
ZZ>= `  M )  |  ps }
5 infssuzledc.a . . . 4  |-  ( ph  ->  A  e.  S )
6 infssuzledc.dc . . . 4  |-  ( (
ph  /\  n  e.  ( M ... A ) )  -> DECID  ps )
73, 4, 5, 6infssuzex 10494 . . 3  |-  ( ph  ->  E. x  e.  RR  ( A. y  e.  S  -.  y  <  x  /\  A. y  e.  RR  (
x  <  y  ->  E. z  e.  S  z  <  y ) ) )
82, 7infclti 7222 . 2  |-  ( ph  -> inf ( S ,  RR ,  <  )  e.  RR )
9 elrabi 2959 . . . 4  |-  ( A  e.  { n  e.  ( ZZ>= `  M )  |  ps }  ->  A  e.  ( ZZ>= `  M )
)
109, 4eleq2s 2326 . . 3  |-  ( A  e.  S  ->  A  e.  ( ZZ>= `  M )
)
11 eluzelre 9766 . . 3  |-  ( A  e.  ( ZZ>= `  M
)  ->  A  e.  RR )
125, 10, 113syl 17 . 2  |-  ( ph  ->  A  e.  RR )
132, 7inflbti 7223 . . 3  |-  ( ph  ->  ( A  e.  S  ->  -.  A  < inf ( S ,  RR ,  <  ) ) )
145, 13mpd 13 . 2  |-  ( ph  ->  -.  A  < inf ( S ,  RR ,  <  ) )
158, 12, 14nltled 8300 1  |-  ( ph  -> inf ( S ,  RR ,  <  )  <_  A
)
Colors of variables: wff set class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 104    <-> wb 105  DECID wdc 841    = wceq 1397    e. wcel 2202   {crab 2514   class class class wbr 4088   ` cfv 5326  (class class class)co 6018  infcinf 7182   RRcr 8031    < clt 8214    <_ cle 8215   ZZcz 9479   ZZ>=cuz 9755   ...cfz 10243
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 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8123  ax-resscn 8124  ax-1cn 8125  ax-1re 8126  ax-icn 8127  ax-addcl 8128  ax-addrcl 8129  ax-mulcl 8130  ax-addcom 8132  ax-addass 8134  ax-distr 8136  ax-i2m1 8137  ax-0lt1 8138  ax-0id 8140  ax-rnegex 8141  ax-cnre 8143  ax-pre-ltirr 8144  ax-pre-ltwlin 8145  ax-pre-lttrn 8146  ax-pre-apti 8147  ax-pre-ltadd 8148
This theorem depends on definitions:  df-bi 117  df-dc 842  df-3or 1005  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rmo 2518  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-fv 5334  df-riota 5971  df-ov 6021  df-oprab 6022  df-mpo 6023  df-1st 6303  df-2nd 6304  df-sup 7183  df-inf 7184  df-pnf 8216  df-mnf 8217  df-xr 8218  df-ltxr 8219  df-le 8220  df-sub 8352  df-neg 8353  df-inn 9144  df-n0 9403  df-z 9480  df-uz 9756  df-fz 10244  df-fzo 10378
This theorem is referenced by:  zsupssdc  10499  bitsfzolem  12533  nnminle  12624  nninfctlemfo  12629  lcmledvds  12660  odzdvds  12836  4sqlem13m  12994  4sqlem17  12998
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