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| Mirrors > Home > ILE Home > Th. List > eqle | GIF version | ||
| Description: Equality implies 'less than or equal to'. (Contributed by NM, 4-Apr-2005.) |
| Ref | Expression |
|---|---|
| eqle | ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 = 𝐵) → 𝐴 ≤ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | leid 8399 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 ≤ 𝐴) | |
| 2 | breq2 4129 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ≤ 𝐴 ↔ 𝐴 ≤ 𝐵)) | |
| 3 | 2 | biimpac 298 | . 2 ⊢ ((𝐴 ≤ 𝐴 ∧ 𝐴 = 𝐵) → 𝐴 ≤ 𝐵) |
| 4 | 1, 3 | sylan 283 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 = 𝐵) → 𝐴 ≤ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1402 ∈ wcel 2209 class class class wbr 4125 ℝcr 8168 ≤ cle 8351 |
| 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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-pre-ltirr 8281 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-xp 4775 df-cnv 4777 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 |
| This theorem is referenced by: eqlei 8409 eqlei2 8410 zletric 9667 zlelttric 9668 zltnle 9669 zleloe 9670 zdcle 9700 qletric 10654 qlelttric 10655 qltnle 10656 iseqf1olemkle 10912 pfxsuffeqwrdeq 11448 resqrexlemcvg 11763 resqrexlemglsq 11766 cjcn2 12060 cvgratz 12277 gzsumsplit0 14125 |
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