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Theorem iccleub 13454
Description: An element of a closed interval is less than or equal to its upper bound. (Contributed by Jeff Hankins, 14-Jul-2009.)
Assertion
Ref Expression
iccleub ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*𝐶 ∈ (𝐴[,]𝐵)) → 𝐶𝐵)

Proof of Theorem iccleub
StepHypRef Expression
1 elicc1 13442 . . 3 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ*𝐴𝐶𝐶𝐵)))
2 simp3 1156 . . 3 ((𝐶 ∈ ℝ*𝐴𝐶𝐶𝐵) → 𝐶𝐵)
31, 2biimtrdi 256 . 2 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) → 𝐶𝐵))
433impia 1135 1 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*𝐶 ∈ (𝐴[,]𝐵)) → 𝐶𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401  w3a 1103  wcel 2145   class class class wbr 5103  (class class class)co 7413  *cxr 11266  cle 11268  [,]cicc 13401
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-sep 5251  ax-pr 5398  ax-un 7736  ax-cnex 11180  ax-resscn 11181
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-sbc 3740  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-iota 6489  df-fun 6535  df-fv 6541  df-ov 7416  df-oprab 7417  df-mpo 7418  df-xr 11271  df-icc 13405
This theorem is used by:  supicc  13554  supiccub  13555  supicclub  13556  oprpiece1res1  25179  ivthlem1  25679  isosctrlem1  27055  ttgcontlem1  29341  broucube  38403  mblfinlem1  38406  ftc1cnnclem  38440  ftc2nc  38451  areaquad  44057  isosctrlem1ALT  45756  lefldiveq  46125  eliccelioc  46351  iccintsng  46353  eliccnelico  46359  eliccelicod  46360  inficc  46364  iccdificc  46369  iccleubd  46378  cncfiooiccre  46723  itgioocnicc  46805  itgspltprt  46807  itgiccshift  46808  fourierdlem1  46936  fourierdlem20  46955  fourierdlem24  46959  fourierdlem25  46960  fourierdlem27  46962  fourierdlem43  46978  fourierdlem44  46979  fourierdlem50  46984  fourierdlem51  46985  fourierdlem52  46986  fourierdlem64  46998  fourierdlem73  47007  fourierdlem76  47010  fourierdlem79  47013  fourierdlem81  47015  fourierdlem92  47026  fourierdlem102  47036  fourierdlem103  47037  fourierdlem104  47038  fourierdlem114  47048  rrxsnicc  47128  salgencntex  47171  sge0p1  47242  hoidmv1lelem3  47421  hoidmvlelem1  47423  hoidmvlelem4  47426
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