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Mirrors > Home > MPE Home > Th. List > ltlei | Structured version Visualization version GIF version |
Description: 'Less than' implies 'less than or equal to'. (Contributed by NM, 14-May-1999.) |
Ref | Expression |
---|---|
lt.1 | ⊢ 𝐴 ∈ ℝ |
lt.2 | ⊢ 𝐵 ∈ ℝ |
Ref | Expression |
---|---|
ltlei | ⊢ (𝐴 < 𝐵 → 𝐴 ≤ 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lt.1 | . 2 ⊢ 𝐴 ∈ ℝ | |
2 | lt.2 | . 2 ⊢ 𝐵 ∈ ℝ | |
3 | ltle 10757 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 → 𝐴 ≤ 𝐵)) | |
4 | 1, 2, 3 | mp2an 692 | 1 ⊢ (𝐴 < 𝐵 → 𝐴 ≤ 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2112 class class class wbr 5030 ℝcr 10564 < clt 10703 ≤ cle 10704 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1912 ax-6 1971 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2159 ax-12 2176 ax-ext 2730 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7457 ax-resscn 10622 ax-pre-lttri 10639 |
This theorem depends on definitions: df-bi 210 df-an 401 df-or 846 df-3an 1087 df-tru 1542 df-ex 1783 df-nf 1787 df-sb 2071 df-mo 2558 df-eu 2589 df-clab 2737 df-cleq 2751 df-clel 2831 df-nfc 2902 df-ne 2953 df-nel 3057 df-ral 3076 df-rex 3077 df-rab 3080 df-v 3412 df-sbc 3698 df-csb 3807 df-dif 3862 df-un 3864 df-in 3866 df-ss 3876 df-nul 4227 df-if 4419 df-pw 4494 df-sn 4521 df-pr 4523 df-op 4527 df-uni 4797 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5428 df-xp 5528 df-rel 5529 df-cnv 5530 df-co 5531 df-dm 5532 df-rn 5533 df-res 5534 df-ima 5535 df-iota 6292 df-fun 6335 df-fn 6336 df-f 6337 df-f1 6338 df-fo 6339 df-f1o 6340 df-fv 6341 df-er 8297 df-en 8526 df-dom 8527 df-sdom 8528 df-pnf 10705 df-mnf 10706 df-xr 10707 df-ltxr 10708 df-le 10709 |
This theorem is referenced by: ltleii 10791 letrii 10793 dvdslelem 15700 hgt750lem 32140 dnizphlfeqhlf 34195 knoppcnlem4 34215 lcmineqlem 39609 |
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