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Theorem elicc1 12783
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 12746 . 2 [,] = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑧𝑧𝑦)})
21elixx1 12748 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 5066  (class class class)co 7156  *cxr 10674  cle 10676  [,]cicc 12742
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 2793  ax-sep 5203  ax-nul 5210  ax-pr 5330  ax-un 7461  ax-cnex 10593  ax-resscn 10594
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 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-iota 6314  df-fun 6357  df-fv 6363  df-ov 7159  df-oprab 7160  df-mpo 7161  df-xr 10679  df-icc 12746
This theorem is referenced by:  iccid  12784  iccleub  12793  iccgelb  12794  elicc2  12802  elicc4  12804  elxrge0  12846  lbicc2  12853  ubicc2  12854  difreicc  12871  cnblcld  23383  ovolf  24083  volivth  24208  itg2ge0  24336  itg2const2  24342  taylfvallem1  24945  tayl0  24950  radcnvcl  25005  radcnvle  25008  psercnlem1  25013  eliccelico  30500  xrdifh  30503  unitssxrge0  31143  esumle  31317  esumlef  31321  esumpinfsum  31336  voliune  31488  volfiniune  31489  ddemeas  31495  prob01  31671  elicc3  33665  ftc1cnnclem  34980  ftc1anc  34990  ftc2nc  34991  iocinico  39867  icoiccdif  41849  iblsplit  42300  iblspltprt  42307  itgspltprt  42313  fourierdlem1  42442  iccpartrn  43639  rrxsphere  44784
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