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| Mirrors > Home > ILE Home > Th. List > gtned | GIF version | ||
| Description: 'Less than' implies not equal. See also gtapd 8916 which is the same but for apartness. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| ltd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltned.2 | ⊢ (𝜑 → 𝐴 < 𝐵) |
| Ref | Expression |
|---|---|
| gtned | ⊢ (𝜑 → 𝐵 ≠ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | ltned.2 | . 2 ⊢ (𝜑 → 𝐴 < 𝐵) | |
| 3 | ltne 8363 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 < 𝐵) → 𝐵 ≠ 𝐴) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → 𝐵 ≠ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2205 ≠ wne 2414 class class class wbr 4111 ℝcr 8131 < clt 8313 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-cnex 8223 ax-resscn 8224 ax-pre-ltirr 8244 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-br 4112 df-opab 4174 df-xp 4757 df-pnf 8315 df-mnf 8316 df-ltxr 8318 |
| This theorem is referenced by: ltned 8392 seq3f1olemqsumkj 10880 seqf1oglem1 10888 seqf1oglem2 10889 nn0opthlem2d 11091 zfz1isolemiso 11219 ennnfonelemim 13196 logbgcd1irr 15881 logbgcd1irraplemexp 15882 perfectlem2 15917 gausslemma2dlem4 15986 |
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