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| Mirrors > Home > MPE Home > Th. List > Mathboxes > icoltubd | Structured version Visualization version GIF version | ||
| Description: An element of a left-closed right-open interval is less than its upper bound. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| icoltubd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| icoltubd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| icoltubd.3 | ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) |
| Ref | Expression |
|---|---|
| icoltubd | ⊢ (𝜑 → 𝐶 < 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | icoltubd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 2 | icoltubd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
| 3 | icoltubd.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) | |
| 4 | icoltub 46793 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ (𝐴[,)𝐵)) → 𝐶 < 𝐵) | |
| 5 | 1, 2, 3, 4 | syl3anc 1399 | 1 ⊢ (𝜑 → 𝐶 < 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 class class class wbr 5108 (class class class)co 7451 ℝ*cxr 11381 < clt 11382 [,)cico 13518 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-iota 6520 df-fun 6568 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-xr 11386 df-ico 13522 |
| This theorem is used by: icomnfinre 46837 xlimmnfvlem1 47115 fourierdlem48 47437 |
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