Theorem iccleub 13423

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 13411	. . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)))
2		simp3 1156	. . 3 ⊢ ((𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵) → 𝐶 ≤ 𝐵)
3	1, 2	biimtrdi 256	. 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) → 𝐶 ≤ 𝐵))
4	3	3impia 1135	1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ (𝐴[,]𝐵)) → 𝐶 ≤ 𝐵)

Syntax hints:   → wi 4   ∧ wa 400   ∧ w3a 1103   ∈ wcel 2143   class class class wbr 5109  (class class class)co 7410  ℝ^*cxr 11237   ≤ cle 11239  [,]cicc 13370

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5257  ax-pr 5404  ax-un 7732  ax-cnex 11151  ax-resscn 11152

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-sbc 3745  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-br 5110  df-opab 5174  df-id 5556  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-iota 6492  df-fun 6538  df-fv 6544  df-ov 7413  df-oprab 7414  df-mpo 7415  df-xr 11242  df-icc 13374

This theorem is referenced by:  supicc  13523  supiccub  13524  supicclub  13525  oprpiece1res1  25110  ivthlem1  25610  isosctrlem1  26983  ttgcontlem1  29234  broucube  38305  mblfinlem1  38308  ftc1cnnclem  38342  ftc2nc  38353  areaquad  43943  isosctrlem1ALT  45642  lefldiveq  46011  eliccelioc  46237  iccintsng  46239  eliccnelico  46245  eliccelicod  46246  inficc  46250  iccdificc  46255  iccleubd  46264  cncfiooiccre  46609  itgioocnicc  46691  itgspltprt  46693  itgiccshift  46694  fourierdlem1  46822  fourierdlem20  46841  fourierdlem24  46845  fourierdlem25  46846  fourierdlem27  46848  fourierdlem43  46864  fourierdlem44  46865  fourierdlem50  46870  fourierdlem51  46871  fourierdlem52  46872  fourierdlem64  46884  fourierdlem73  46893  fourierdlem76  46896  fourierdlem79  46899  fourierdlem81  46901  fourierdlem92  46912  fourierdlem102  46922  fourierdlem103  46923  fourierdlem104  46924  fourierdlem114  46934  rrxsnicc  47014  salgencntex  47057  sge0p1  47128  hoidmv1lelem3  47307  hoidmvlelem1  47309  hoidmvlelem4  47312