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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 9998 | . . 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 1182 | 1 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 ∧ w3a 980 ∈ wcel 2167 class class class wbr 4033 (class class class)co 5922 ℝ*cxr 8060 < clt 8061 ≤ cle 8062 [,)cico 9965 |
| 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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-cnex 7970 ax-resscn 7971 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-iota 5219 df-fun 5260 df-fv 5266 df-ov 5925 df-oprab 5926 df-mpo 5927 df-pnf 8063 df-mnf 8064 df-xr 8065 df-ico 9969 |
| This theorem is referenced by: fprodge1 11804 |
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