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| Mirrors > Home > MPE Home > Th. List > prsref | Structured version Visualization version GIF version | ||
| Description: "Less than or equal to" is reflexive in a proset. (Contributed by Stefan O'Rear, 1-Feb-2015.) |
| Ref | Expression |
|---|---|
| isprs.b | ⊢ 𝐵 = (Base‘𝐾) |
| isprs.l | ⊢ ≤ = (le‘𝐾) |
| Ref | Expression |
|---|---|
| prsref | ⊢ ((𝐾 ∈ Proset ∧ 𝑋 ∈ 𝐵) → 𝑋 ≤ 𝑋) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 23 | . . . 4 ⊢ (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝐵) | |
| 2 | 1, 1, 1 | 3jca 1146 | . . 3 ⊢ (𝑋 ∈ 𝐵 → (𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵)) |
| 3 | isprs.b | . . . 4 ⊢ 𝐵 = (Base‘𝐾) | |
| 4 | isprs.l | . . . 4 ⊢ ≤ = (le‘𝐾) | |
| 5 | 3, 4 | prslem 18370 | . . 3 ⊢ ((𝐾 ∈ Proset ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵)) → (𝑋 ≤ 𝑋 ∧ ((𝑋 ≤ 𝑋 ∧ 𝑋 ≤ 𝑋) → 𝑋 ≤ 𝑋))) |
| 6 | 2, 5 | sylan2 605 | . 2 ⊢ ((𝐾 ∈ Proset ∧ 𝑋 ∈ 𝐵) → (𝑋 ≤ 𝑋 ∧ ((𝑋 ≤ 𝑋 ∧ 𝑋 ≤ 𝑋) → 𝑋 ≤ 𝑋))) |
| 7 | 6 | simpld 500 | 1 ⊢ ((𝐾 ∈ Proset ∧ 𝑋 ∈ 𝐵) → 𝑋 ≤ 𝑋) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 class class class wbr 5111 ‘cfv 6540 Basecbs 17286 lecple 17334 Proset cproset 18365 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2737 ax-nul 5271 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-ne 2961 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-sbc 3747 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-iota 6496 df-fv 6548 df-proset 18367 |
| This theorem is used by: posref 18391 mgccole1 33333 mgccole2 33334 prsdm 34327 prsrn 34328 prsthinc 50275 |
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