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Theorem iocgtlbd 46345
Description: An element of a left-open right-closed interval is larger than its lower bound. (Contributed by Glauco Siliprandi, 5-Feb-2022.)
Hypotheses
Ref Expression
iocgtlbd.1 (𝜑𝐴 ∈ ℝ*)
iocgtlbd.2 (𝜑𝐵 ∈ ℝ*)
iocgtlbd.3 (𝜑𝐶 ∈ (𝐴(,]𝐵))
Assertion
Ref Expression
iocgtlbd (𝜑𝐴 < 𝐶)

Proof of Theorem iocgtlbd
StepHypRef Expression
1 iocgtlbd.1 . 2 (𝜑𝐴 ∈ ℝ*)
2 iocgtlbd.2 . 2 (𝜑𝐵 ∈ ℝ*)
3 iocgtlbd.3 . 2 (𝜑𝐶 ∈ (𝐴(,]𝐵))
4 iocgtlb 46278 . 2 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*𝐶 ∈ (𝐴(,]𝐵)) → 𝐴 < 𝐶)
51, 2, 3, 4syl3anc 1398 1 (𝜑𝐴 < 𝐶)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wcel 2146   class class class wbr 5111  (class class class)co 7419  *cxr 11259   < clt 11260  (,]cioc 13391
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-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-ral 3082  df-rex 3092  df-rab 3419  df-v 3459  df-sbc 3747  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-br 5112  df-opab 5176  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-iota 6496  df-fun 6542  df-fv 6548  df-ov 7422  df-oprab 7423  df-mpo 7424  df-xr 11264  df-ioc 13395
This theorem is used by:  xlimpnfvlem1  46610  fourierdlem48  46928  fourierdlem49  46929
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