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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 10409 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 10409 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 <ℝ 𝐵 → (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) | |
2 | ltxrlt 10509 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 𝐴 <ℝ 𝐵)) | |
3 | 2 | 3adant3 1112 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐵 ↔ 𝐴 <ℝ 𝐵)) |
4 | readdcl 10416 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐶 + 𝐴) ∈ ℝ) | |
5 | readdcl 10416 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 + 𝐵) ∈ ℝ) | |
6 | ltxrlt 10509 | . . . . 5 ⊢ (((𝐶 + 𝐴) ∈ ℝ ∧ (𝐶 + 𝐵) ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) | |
7 | 4, 5, 6 | syl2an 586 | . . . 4 ⊢ (((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
8 | 7 | 3impdi 1330 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
9 | 8 | 3coml 1107 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 + 𝐴) < (𝐶 + 𝐵) ↔ (𝐶 + 𝐴) <ℝ (𝐶 + 𝐵))) |
10 | 1, 3, 9 | 3imtr4d 286 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐵 → (𝐶 + 𝐴) < (𝐶 + 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 198 ∧ wa 387 ∧ w3a 1068 ∈ wcel 2050 class class class wbr 4925 (class class class)co 6974 ℝcr 10332 + caddc 10336 <ℝ cltrr 10337 < clt 10472 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1758 ax-4 1772 ax-5 1869 ax-6 1928 ax-7 1965 ax-8 2052 ax-9 2059 ax-10 2079 ax-11 2093 ax-12 2106 ax-13 2301 ax-ext 2744 ax-sep 5056 ax-nul 5063 ax-pow 5115 ax-pr 5182 ax-un 7277 ax-resscn 10390 ax-addrcl 10394 ax-pre-ltadd 10409 |
This theorem depends on definitions: df-bi 199 df-an 388 df-or 834 df-3an 1070 df-tru 1510 df-ex 1743 df-nf 1747 df-sb 2016 df-mo 2547 df-eu 2584 df-clab 2753 df-cleq 2765 df-clel 2840 df-nfc 2912 df-ne 2962 df-nel 3068 df-ral 3087 df-rex 3088 df-rab 3091 df-v 3411 df-sbc 3676 df-csb 3781 df-dif 3826 df-un 3828 df-in 3830 df-ss 3837 df-nul 4173 df-if 4345 df-pw 4418 df-sn 4436 df-pr 4438 df-op 4442 df-uni 4709 df-br 4926 df-opab 4988 df-mpt 5005 df-id 5308 df-xp 5409 df-rel 5410 df-cnv 5411 df-co 5412 df-dm 5413 df-rn 5414 df-res 5415 df-ima 5416 df-iota 6149 df-fun 6187 df-fn 6188 df-f 6189 df-f1 6190 df-fo 6191 df-f1o 6192 df-fv 6193 df-er 8087 df-en 8305 df-dom 8306 df-sdom 8307 df-pnf 10474 df-mnf 10475 df-ltxr 10477 |
This theorem is referenced by: ltadd2 10542 nnge1 11466 ltoddhalfle 15568 dp2lt 30328 sqrtpwpw2p 43093 |
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