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| Mirrors > Home > MPE Home > Th. List > axltadd | Structured version Visualization version GIF version | ||
| Description: Ordering property of addition on reals. Axiom 20 of 22 for real and complex numbers, derived from ZF set theory. (This restates ax-pre-ltadd 11194 with ordering on the extended reals.) (Contributed by NM, 13-Oct-2005.) |
| Ref | Expression |
|---|---|
| axltadd | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐵 → (𝐶 + 𝐴) < (𝐶 + 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-pre-ltadd 11194 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 <ℝ 𝐵 → (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) | |
| 2 | ltxrlt 11298 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 𝐴 <ℝ 𝐵)) | |
| 3 | 2 | 3adant3 1150 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐵 ↔ 𝐴 <ℝ 𝐵)) |
| 4 | readdcl 11201 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐶 + 𝐴) ∈ ℝ) | |
| 5 | readdcl 11201 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 + 𝐵) ∈ ℝ) | |
| 6 | ltxrlt 11298 | . . . . 5 ⊢ (((𝐶 + 𝐴) ∈ ℝ ∧ (𝐶 + 𝐵) ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) | |
| 7 | 4, 5, 6 | syl2an 608 | . . . 4 ⊢ (((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
| 8 | 7 | 3impdi 1369 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
| 9 | 8 | 3coml 1145 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
| 10 | 1, 3, 9 | 3imtr4d 297 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐵 → (𝐶 + 𝐴) < (𝐶 + 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2146 class class class wbr 5114 (class class class)co 7423 ℝcr 11117 + caddc 11121 <ℝ cltrr 11122 < clt 11261 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-resscn 11175 ax-addrcl 11179 ax-pre-ltadd 11194 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5561 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-ltxr 11266 |
| This theorem is used by: ltadd2 11332 nnge1 12282 ltoddhalfle 16444 dp2lt 33241 sqrtpwpw2p 48331 |
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