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Mirrors > Home > ILE Home > Th. List > ltrelsr | GIF version |
Description: Signed real 'less than' is a relation on signed reals. (Contributed by NM, 14-Feb-1996.) |
Ref | Expression |
---|---|
ltrelsr | ⊢ <R ⊆ (R × R) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-ltr 6815 | . 2 ⊢ <R = {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ ∃𝑧∃𝑤∃𝑣∃𝑢((𝑥 = [〈𝑧, 𝑤〉] ~R ∧ 𝑦 = [〈𝑣, 𝑢〉] ~R ) ∧ (𝑧 +P 𝑢)<P (𝑤 +P 𝑣)))} | |
2 | opabssxp 4414 | . 2 ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ ∃𝑧∃𝑤∃𝑣∃𝑢((𝑥 = [〈𝑧, 𝑤〉] ~R ∧ 𝑦 = [〈𝑣, 𝑢〉] ~R ) ∧ (𝑧 +P 𝑢)<P (𝑤 +P 𝑣)))} ⊆ (R × R) | |
3 | 1, 2 | eqsstri 2975 | 1 ⊢ <R ⊆ (R × R) |
Colors of variables: wff set class |
Syntax hints: ∧ wa 97 = wceq 1243 ∃wex 1381 ∈ wcel 1393 ⊆ wss 2917 〈cop 3378 class class class wbr 3764 {copab 3817 × cxp 4343 (class class class)co 5512 [cec 6104 +P cpp 6391 <P cltp 6393 ~R cer 6394 Rcnr 6395 <R cltr 6401 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-in 2924 df-ss 2931 df-opab 3819 df-xp 4351 df-ltr 6815 |
This theorem is referenced by: gt0srpr 6833 recexgt0sr 6858 addgt0sr 6860 mulgt0sr 6862 caucvgsrlemcl 6873 caucvgsrlemasr 6874 caucvgsrlemfv 6875 ltresr 6915 axpre-ltirr 6956 axpre-lttrn 6958 |
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