| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > ltlen | Structured version Visualization version GIF version | ||
| Description: 'Less than' expressed in terms of 'less than or equal to'. (Contributed by NM, 27-Oct-1999.) |
| Ref | Expression |
|---|---|
| ltlen | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ (𝐴 ≤ 𝐵 ∧ 𝐵 ≠ 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltle 11399 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) | |
| 2 | ltne 11408 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 < 𝐵) → 𝐵 ≠ 𝐴) | |
| 3 | 2 | ex 418 | . . . 4 ⊢ (𝐴 ∈ ℝ → (𝐴 < 𝐵 → 𝐵 ≠ 𝐴)) |
| 4 | 3 | adantr 486 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → 𝐵 ≠ 𝐴)) |
| 5 | 1, 4 | jcad 522 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → (𝐴 ≤ 𝐵 ∧ 𝐵 ≠ 𝐴))) |
| 6 | leloe 11397 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 ↔ (𝐴 < 𝐵 ∨ 𝐴 = 𝐵))) | |
| 7 | df-ne 2956 | . . . . . 6 ⊢ (𝐵 ≠ 𝐴 ↔ ¬ 𝐵 = 𝐴) | |
| 8 | pm2.24 125 | . . . . . . 7 ⊢ (𝐵 = 𝐴 → (¬ 𝐵 = 𝐴 → 𝐴 < 𝐵)) | |
| 9 | 8 | eqcoms 2768 | . . . . . 6 ⊢ (𝐴 = 𝐵 → (¬ 𝐵 = 𝐴 → 𝐴 < 𝐵)) |
| 10 | 7, 9 | biimtrid 245 | . . . . 5 ⊢ (𝐴 = 𝐵 → (𝐵 ≠ 𝐴 → 𝐴 < 𝐵)) |
| 11 | 10 | jao1i 872 | . . . 4 ⊢ ((𝐴 < 𝐵 ∨ 𝐴 = 𝐵) → (𝐵 ≠ 𝐴 → 𝐴 < 𝐵)) |
| 12 | 6, 11 | biimtrdi 256 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 ≤ 𝐵 → (𝐵 ≠ 𝐴 → 𝐴 < 𝐵))) |
| 13 | 12 | impd 416 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((𝐴 ≤ 𝐵 ∧ 𝐵 ≠ 𝐴) → 𝐴 < 𝐵)) |
| 14 | 5, 13 | impbid 215 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ (𝐴 ≤ 𝐵 ∧ 𝐵 ≠ 𝐴))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∨ wo 861 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 class class class wbr 5102 ℝcr 11200 < clt 11344 ≤ cle 11345 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11258 ax-pre-lttri 11275 ax-pre-lttrn 11276 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-er 8718 df-en 8975 df-dom 8976 df-sdom 8977 df-pnf 11346 df-mnf 11347 df-xr 11348 df-ltxr 11349 df-le 11350 |
| This theorem is used by: ltleni 11429 ltlend 11456 nn0lt2 12763 rpneg 13155 fzofzim 13845 elfznelfzob 13910 hashsdom 14526 cnpart 15408 oddprmgt2 16876 chfacfisf 23173 chfacfisfcpmat 23174 ang180lem2 27139 mumullem2 27508 lgsneg 27649 lgsdilem 27652 lgsdirprm 27659 2sqreultlem 27775 2sqreunnltlem 27778 axlowdimlem16 29536 unitdivcld 34576 zltp1ne 35943 poimirlem24 38606 itg2addnclem 38633 fzopredsuc 48438 iccpartiltu 48548 icceuelpartlem 48561 |
| Copyright terms: Public domain | W3C validator |