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| Mirrors > Home > MPE Home > Th. List > le2subd | Structured version Visualization version GIF version | ||
| Description: Subtracting both sides of two 'less than or equal to' relations. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| leidd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltnegd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| ltadd1d.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
| lt2addd.4 | ⊢ (𝜑 → 𝐷 ∈ ℝ) |
| le2addd.5 | ⊢ (𝜑 → 𝐴 ≤ 𝐶) |
| le2addd.6 | ⊢ (𝜑 → 𝐵 ≤ 𝐷) |
| Ref | Expression |
|---|---|
| le2subd | ⊢ (𝜑 → (𝐴 − 𝐷) ≤ (𝐶 − 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | le2addd.5 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐶) | |
| 2 | le2addd.6 | . 2 ⊢ (𝜑 → 𝐵 ≤ 𝐷) | |
| 3 | leidd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | lt2addd.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℝ) | |
| 5 | ltadd1d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
| 6 | ltnegd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 7 | le2sub 11637 | . . 3 ⊢ (((𝐴 ∈ ℝ ∧ 𝐷 ∈ ℝ) ∧ (𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ)) → ((𝐴 ≤ 𝐶 ∧ 𝐵 ≤ 𝐷) → (𝐴 − 𝐷) ≤ (𝐶 − 𝐵))) | |
| 8 | 3, 4, 5, 6, 7 | syl22anc 838 | . 2 ⊢ (𝜑 → ((𝐴 ≤ 𝐶 ∧ 𝐵 ≤ 𝐷) → (𝐴 − 𝐷) ≤ (𝐶 − 𝐵))) |
| 9 | 1, 2, 8 | mp2and 699 | 1 ⊢ (𝜑 → (𝐴 − 𝐷) ≤ (𝐶 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2109 class class class wbr 5095 (class class class)co 7353 ℝcr 11027 ≤ cle 11169 − cmin 11365 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-po 5531 df-so 5532 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-er 8632 df-en 8880 df-dom 8881 df-sdom 8882 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11367 df-neg 11368 |
| This theorem is referenced by: itgle 25727 harmonicbnd4 26937 logfaclbnd 27149 chpdifbndlem1 27480 pntrlog2bndlem6 27510 dnibndlem10 36460 knoppndvlem15 36499 bcled 42151 iccsuble 45501 dvbdfbdioolem1 45910 etransclem23 46239 |
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