Theorem iccleub 13354

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)) → 𝐶 ≤ 𝐵)

Proof of Theorem iccleub

Step	Hyp	Ref	Expression
1		elicc1 13342	. . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)))
2		simp3 1139	. . 3 ⊢ ((𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵) → 𝐶 ≤ 𝐵)
3	1, 2	biimtrdi 253	. 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) → 𝐶 ≤ 𝐵))
4	3	3impia 1118	1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ (𝐴[,]𝐵)) → 𝐶 ≤ 𝐵)

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1087   ∈ wcel 2114   class class class wbr 5085  (class class class)co 7367  ℝ^*cxr 11178   ≤ cle 11180  [,]cicc 13301

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-pr 5375  ax-un 7689  ax-cnex 11094  ax-resscn 11095

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-sbc 3729  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-iota 6454  df-fun 6500  df-fv 6506  df-ov 7370  df-oprab 7371  df-mpo 7372  df-xr 11183  df-icc 13305

This theorem is referenced by:  supicc  13454  supiccub  13455  supicclub  13456  oprpiece1res1  24918  ivthlem1  25418  isosctrlem1  26782  ttgcontlem1  28953  broucube  37975  mblfinlem1  37978  ftc1cnnclem  38012  ftc2nc  38023  areaquad  43644  isosctrlem1ALT  45360  lefldiveq  45725  eliccelioc  45951  iccintsng  45953  eliccnelico  45959  eliccelicod  45960  inficc  45964  iccdificc  45969  iccleubd  45978  cncfiooiccre  46323  itgioocnicc  46405  itgspltprt  46407  itgiccshift  46408  fourierdlem1  46536  fourierdlem20  46555  fourierdlem24  46559  fourierdlem25  46560  fourierdlem27  46562  fourierdlem43  46578  fourierdlem44  46579  fourierdlem50  46584  fourierdlem51  46585  fourierdlem52  46586  fourierdlem64  46598  fourierdlem73  46607  fourierdlem76  46610  fourierdlem79  46613  fourierdlem81  46615  fourierdlem92  46626  fourierdlem102  46636  fourierdlem103  46637  fourierdlem104  46638  fourierdlem114  46648  rrxsnicc  46728  salgencntex  46771  sge0p1  46842  hoidmv1lelem3  47021  hoidmvlelem1  47023  hoidmvlelem4  47026