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Theorem iccf 13493
Description: The set of closed intervals of extended reals maps to subsets of extended reals. (Contributed by FL, 14-Jun-2007.) (Revised by Mario Carneiro, 3-Nov-2013.)
Assertion
Ref Expression
iccf [,]:(ℝ* × ℝ*)⟶𝒫 ℝ*

Proof of Theorem iccf
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-icc 13397 . 2 [,] = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥𝑧𝑧𝑦)})
21ixxf 13400 1 [,]:(ℝ* × ℝ*)⟶𝒫 ℝ*
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  𝒫 cpw 4564   × cxp 5661  wf 6536  *cxr 11259  cle 11261  [,]cicc 13393
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2737  ax-sep 5259  ax-nul 5271  ax-pr 5406  ax-un 7742  ax-cnex 11173  ax-resscn 11174
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3082  df-rex 3092  df-rab 3419  df-v 3459  df-sbc 3747  df-csb 3855  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4287  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4875  df-iun 4960  df-br 5112  df-opab 5176  df-mpt 5195  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-iota 6496  df-fun 6542  df-fn 6543  df-f 6544  df-fv 6548  df-oprab 7423  df-mpo 7424  df-1st 7992  df-2nd 7993  df-xr 11264  df-icc 13397
This theorem is used by:  lecldbas  23428  ovolficc  25680  ovolficcss  25681  uniiccdif  25790  uniiccvol  25792  dyadmbllem  25811  dyadmbl  25812  opnmbllem  25813  opnmbllem0  38366  mblfinlem1  38367  mblfinlem2  38368
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