| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > xrltned | Structured version Visualization version GIF version | ||
| Description: 'Less than' implies not equal. (Contributed by Glauco Siliprandi, 21-Nov-2020.) |
| Ref | Expression |
|---|---|
| xrltned.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| xrltned.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| xrltned.3 | ⊢ (𝜑 → 𝐴 < 𝐵) |
| Ref | Expression |
|---|---|
| xrltned | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xrltned.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 2 | xrltned.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
| 3 | xrltned.3 | . . 3 ⊢ (𝜑 → 𝐴 < 𝐵) | |
| 4 | 1, 2, 3 | xrgtned 13219 | . 2 ⊢ (𝜑 → 𝐵 ≠ 𝐴) |
| 5 | 4 | necomd 3012 | 1 ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ≠ wne 2957 class class class wbr 5107 ℝ*cxr 11270 < clt 11271 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-pre-lttri 11202 ax-pre-lttrn 11203 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 |
| This theorem is used by: infxr 46204 infleinflem2 46208 xrpnf 46321 pimxrneun 46324 ge0lere 46370 liminflbuz2 46651 liminflimsupxrre 46653 ioorrnopnxrlem 47142 sge0hsphoire 47425 hoidmv1lelem1 47427 hoidmv1lelem2 47428 hoidmv1lelem3 47429 hoidmvlelem1 47431 hoidmvlelem4 47434 pimiooltgt 47546 |
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