Theorem iocgtlbd 46022

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	⊢ (𝜑 → 𝐴 ∈ ℝ*)
iocgtlbd.2	⊢ (𝜑 → 𝐵 ∈ ℝ*)
iocgtlbd.3	⊢ (𝜑 → 𝐶 ∈ (𝐴(,]𝐵))

Assertion

Ref	Expression
iocgtlbd	⊢ (𝜑 → 𝐴 < 𝐶)

Proof of Theorem iocgtlbd

Step	Hyp	Ref	Expression
1		iocgtlbd.1	. 2 ⊢ (𝜑 → 𝐴 ∈ ℝ*)
2		iocgtlbd.2	. 2 ⊢ (𝜑 → 𝐵 ∈ ℝ*)
3		iocgtlbd.3	. 2 ⊢ (𝜑 → 𝐶 ∈ (𝐴(,]𝐵))
4		iocgtlb 45955	. 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ (𝐴(,]𝐵)) → 𝐴 < 𝐶)
5	1, 2, 3, 4	syl3anc 1379	1 ⊢ (𝜑 → 𝐴 < 𝐶)

Syntax hints:   → wi 4   ∈ wcel 2119   class class class wbr 5073  (class class class)co 7357  ℝ^*cxr 11170   < clt 11171  (,]cioc 13291

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 2711  ax-sep 5219  ax-pr 5363  ax-un 7679  ax-cnex 11086  ax-resscn 11087

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 2718  df-cleq 2731  df-clel 2814  df-nfc 2888  df-ral 3054  df-rex 3064  df-rab 3392  df-v 3433  df-sbc 3724  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4263  df-if 4456  df-pw 4532  df-sn 4557  df-pr 4559  df-op 4563  df-uni 4840  df-br 5074  df-opab 5136  df-id 5514  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-iota 6442  df-fun 6488  df-fv 6494  df-ov 7360  df-oprab 7361  df-mpo 7362  df-xr 11175  df-ioc 13295

This theorem is referenced by:  xlimpnfvlem1  46287