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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 9859 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) | |
7 | 4, 5, 6 | syl2anc 409 | . 2 ⊢ (𝜑 → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) |
8 | 1, 2, 3, 7 | mpbir3and 1170 | 1 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,)𝐵)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 104 ∧ w3a 968 ∈ wcel 2136 class class class wbr 3982 (class class class)co 5842 ℝ*cxr 7932 < clt 7933 ≤ cle 7934 [,)cico 9826 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-iota 5153 df-fun 5190 df-fv 5196 df-ov 5845 df-oprab 5846 df-mpo 5847 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ico 9830 |
This theorem is referenced by: fprodge1 11580 |
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