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Theorem elicc1 12785
Description: Membership in a closed interval of extended reals. (Contributed by NM, 24-Dec-2006.) (Revised by Mario Carneiro, 3-Nov-2013.)
Assertion
Ref Expression
elicc1 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ*𝐴𝐶𝐶𝐵)))

Proof of Theorem elicc1
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-icc 12748 . 2 [,] = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑧𝑧𝑦)})
21elixx1 12750 1 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ*𝐴𝐶𝐶𝐵)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1083  wcel 2114   class class class wbr 5068  (class class class)co 7158  *cxr 10676  cle 10678  [,]cicc 12744
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-iota 6316  df-fun 6359  df-fv 6365  df-ov 7161  df-oprab 7162  df-mpo 7163  df-xr 10681  df-icc 12748
This theorem is referenced by:  iccid  12786  iccleub  12795  iccgelb  12796  elicc2  12804  elicc4  12806  elxrge0  12848  lbicc2  12855  ubicc2  12856  difreicc  12873  cnblcld  23385  ovolf  24085  volivth  24210  itg2ge0  24338  itg2const2  24344  taylfvallem1  24947  tayl0  24952  radcnvcl  25007  radcnvle  25010  psercnlem1  25015  eliccelico  30502  xrdifh  30505  unitssxrge0  31145  esumle  31319  esumlef  31323  esumpinfsum  31338  voliune  31490  volfiniune  31491  ddemeas  31497  prob01  31673  elicc3  33667  ftc1cnnclem  34967  ftc1anc  34977  ftc2nc  34978  iocinico  39825  icoiccdif  41807  iblsplit  42258  iblspltprt  42265  itgspltprt  42271  fourierdlem1  42400  iccpartrn  43597  rrxsphere  44742
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