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Mirrors > Home > ILE Home > Th. List > gtneii | GIF version |
Description: 'Less than' implies not equal. See also gtapii 8532 which is the same for apartness. (Contributed by Mario Carneiro, 30-Sep-2013.) |
Ref | Expression |
---|---|
lt.1 | ⊢ 𝐴 ∈ ℝ |
ltneii.2 | ⊢ 𝐴 < 𝐵 |
Ref | Expression |
---|---|
gtneii | ⊢ 𝐵 ≠ 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lt.1 | . 2 ⊢ 𝐴 ∈ ℝ | |
2 | ltneii.2 | . 2 ⊢ 𝐴 < 𝐵 | |
3 | ltne 7983 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 < 𝐵) → 𝐵 ≠ 𝐴) | |
4 | 1, 2, 3 | mp2an 423 | 1 ⊢ 𝐵 ≠ 𝐴 |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2136 ≠ wne 2336 class class class wbr 3982 ℝcr 7752 < clt 7933 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-pre-ltirr 7865 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-rab 2453 df-v 2728 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-xp 4610 df-pnf 7935 df-mnf 7936 df-ltxr 7938 |
This theorem is referenced by: ltneii 7995 ine0 8292 fztpval 10018 ene1 11725 3lcm2e6 12092 setsmsdsg 13120 2logb9irr 13529 2logb3irr 13531 2logb9irrap 13535 |
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