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Theorem iocleubd 46010
Description: An element of a left-open right-closed interval is smaller than or equal to its upper bound. (Contributed by Glauco Siliprandi, 23-Oct-2021.)
Hypotheses
Ref Expression
iocleubd.1 (𝜑𝐴 ∈ ℝ*)
iocleubd.2 (𝜑𝐵 ∈ ℝ*)
iocleubd.3 (𝜑𝐶 ∈ (𝐴(,]𝐵))
Assertion
Ref Expression
iocleubd (𝜑𝐶𝐵)

Proof of Theorem iocleubd
StepHypRef Expression
1 iocleubd.1 . 2 (𝜑𝐴 ∈ ℝ*)
2 iocleubd.2 . 2 (𝜑𝐵 ∈ ℝ*)
3 iocleubd.3 . 2 (𝜑𝐶 ∈ (𝐴(,]𝐵))
4 iocleub 45955 . 2 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*𝐶 ∈ (𝐴(,]𝐵)) → 𝐶𝐵)
51, 2, 3, 4syl3anc 1379 1 (𝜑𝐶𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2119   class class class wbr 5079  (class class class)co 7363  *cxr 11176  cle 11178  (,]cioc 13297
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-sep 5225  ax-pr 5369  ax-un 7685  ax-cnex 11092  ax-resscn 11093
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ral 3055  df-rex 3065  df-rab 3393  df-v 3434  df-sbc 3731  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-br 5080  df-opab 5142  df-id 5520  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-iota 6448  df-fun 6494  df-fv 6500  df-ov 7366  df-oprab 7367  df-mpo 7368  df-xr 11181  df-ioc 13301
This theorem is referenced by:  preimaiocmnf  46012  smfsuplem1  47261
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