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Theorem elicc1 12219
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 12182 . 2 [,] = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑧𝑧𝑦)})
21elixx1 12184 1 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ*𝐴𝐶𝐶𝐵)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384  w3a 1037  wcel 1990   class class class wbr 4653  (class class class)co 6650  *cxr 10073  cle 10075  [,]cicc 12178
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-xr 10078  df-icc 12182
This theorem is referenced by:  iccid  12220  iccleub  12229  iccgelb  12230  elicc2  12238  elicc4  12240  xrge0neqmnf  12276  elxrge0  12281  lbicc2  12288  ubicc2  12289  difreicc  12304  cnblcld  22578  oprpiece1res1  22750  ovolf  23250  volivth  23375  itg2ge0  23502  itg2const2  23508  taylfvallem1  24111  tayl0  24116  radcnvcl  24171  radcnvle  24174  psercnlem1  24179  eliccelico  29539  xrdifh  29542  unitssxrge0  29946  esumle  30120  esumlef  30124  esumpinfsum  30139  voliune  30292  volfiniune  30293  ddemeas  30299  prob01  30475  elicc3  32311  ftc1cnnclem  33483  ftc1anc  33493  ftc2nc  33494  iocinico  37797  icoiccdif  39750  iblsplit  40182  iblspltprt  40189  itgspltprt  40195  fourierdlem1  40325  iccpartrn  41366
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