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| Mirrors > Home > ILE Home > Th. List > elicod | GIF version | ||
| Description: Membership in a left-closed right-open interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| elicod.a | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| elicod.b | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| elicod.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ*) |
| elicod.4 | ⊢ (𝜑 → 𝐴 ≤ 𝐶) |
| elicod.5 | ⊢ (𝜑 → 𝐶 < 𝐵) |
| Ref | Expression |
|---|---|
| elicod | ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elicod.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℝ*) | |
| 2 | elicod.4 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐶) | |
| 3 | elicod.5 | . 2 ⊢ (𝜑 → 𝐶 < 𝐵) | |
| 4 | elicod.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 5 | elicod.b | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
| 6 | elico1 10252 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) | |
| 7 | 4, 5, 6 | syl2anc 411 | . 2 ⊢ (𝜑 → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) |
| 8 | 1, 2, 3, 7 | mpbir3and 1207 | 1 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 ∧ w3a 1005 ∈ wcel 2203 class class class wbr 4108 (class class class)co 6049 ℝ*cxr 8303 < clt 8304 ≤ cle 8305 [,)cico 10219 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-cnex 8214 ax-resscn 8215 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-rab 2529 df-v 2814 df-sbc 3042 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-br 4109 df-opab 4171 df-id 4413 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-iota 5311 df-fun 5353 df-fv 5359 df-ov 6052 df-oprab 6053 df-mpo 6054 df-pnf 8306 df-mnf 8307 df-xr 8308 df-ico 10223 |
| This theorem is referenced by: fprodge1 12318 |
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