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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cvrnrefN | Structured version Visualization version GIF version | ||
| Description: The covers relation is not reflexive. (cvnref 32902 analog.) (Contributed by NM, 1-Nov-2012.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| cvrne.b | ⊢ 𝐵 = (Base‘𝐾) |
| cvrne.c | ⊢ 𝐶 = ( ⋖ ‘𝐾) |
| Ref | Expression |
|---|---|
| cvrnrefN | ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) → ¬ 𝑋𝐶𝑋) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2760 | . 2 ⊢ 𝑋 = 𝑋 | |
| 2 | simpll 779 | . . . . 5 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) ∧ 𝑋𝐶𝑋) → 𝐾 ∈ 𝐴) | |
| 3 | simplr 781 | . . . . 5 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) ∧ 𝑋𝐶𝑋) → 𝑋 ∈ 𝐵) | |
| 4 | simpr 490 | . . . . 5 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) ∧ 𝑋𝐶𝑋) → 𝑋𝐶𝑋) | |
| 5 | cvrne.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐾) | |
| 6 | cvrne.c | . . . . . 6 ⊢ 𝐶 = ( ⋖ ‘𝐾) | |
| 7 | 5, 6 | cvrne 40475 | . . . . 5 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑋𝐶𝑋) → 𝑋 ≠ 𝑋) |
| 8 | 2, 3, 3, 4, 7 | syl31anc 1400 | . . . 4 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) ∧ 𝑋𝐶𝑋) → 𝑋 ≠ 𝑋) |
| 9 | 8 | ex 418 | . . 3 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) → (𝑋𝐶𝑋 → 𝑋 ≠ 𝑋)) |
| 10 | 9 | necon2bd 2971 | . 2 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) → (𝑋 = 𝑋 → ¬ 𝑋𝐶𝑋)) |
| 11 | 1, 10 | mpi 21 | 1 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) → ¬ 𝑋𝐶𝑋) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 class class class wbr 5102 ‘cfv 6543 Basecbs 17396 ⋖ ccvr 40456 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-iota 6497 df-fun 6545 df-fv 6551 df-plt 18511 df-covers 40460 |
| This theorem is used by: (None) |
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