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Theorem icossicc 10102
Description: A closed-below, open-above interval is a subset of its closure. (Contributed by Thierry Arnoux, 25-Oct-2016.)
Assertion
Ref Expression
icossicc (𝐴[,)𝐵) ⊆ (𝐴[,]𝐵)

Proof of Theorem icossicc
Dummy variables 𝑎 𝑏 𝑤 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-ico 10036 . 2 [,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎𝑥𝑥 < 𝑏)})
2 df-icc 10037 . 2 [,] = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑥 ∈ ℝ* ∣ (𝑎𝑥𝑥𝑏)})
3 idd 21 . 2 ((𝐴 ∈ ℝ*𝑤 ∈ ℝ*) → (𝐴𝑤𝐴𝑤))
4 xrltle 9940 . 2 ((𝑤 ∈ ℝ*𝐵 ∈ ℝ*) → (𝑤 < 𝐵𝑤𝐵))
51, 2, 3, 4ixxssixx 10044 1 (𝐴[,)𝐵) ⊆ (𝐴[,]𝐵)
Colors of variables: wff set class
Syntax hints:  wa 104  wcel 2177  wss 3170   class class class wbr 4051  (class class class)co 5957  *cxr 8126   < clt 8127  cle 8128  [,)cico 10032  [,]cicc 10033
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2179  ax-14 2180  ax-ext 2188  ax-sep 4170  ax-pow 4226  ax-pr 4261  ax-un 4488  ax-setind 4593  ax-cnex 8036  ax-resscn 8037  ax-pre-ltirr 8057  ax-pre-lttrn 8059
This theorem depends on definitions:  df-bi 117  df-3or 982  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ne 2378  df-nel 2473  df-ral 2490  df-rex 2491  df-rab 2494  df-v 2775  df-sbc 3003  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3857  df-br 4052  df-opab 4114  df-id 4348  df-xp 4689  df-rel 4690  df-cnv 4691  df-co 4692  df-dm 4693  df-iota 5241  df-fun 5282  df-fv 5288  df-ov 5960  df-oprab 5961  df-mpo 5962  df-pnf 8129  df-mnf 8130  df-xr 8131  df-ltxr 8132  df-le 8133  df-ico 10036  df-icc 10037
This theorem is referenced by: (None)
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