| Mathbox for Norm Megill |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > leat | Structured version Visualization version GIF version | ||
| Description: A poset element less than or equal to an atom equals either zero or the atom. (Contributed by NM, 15-Oct-2013.) |
| Ref | Expression |
|---|---|
| leatom.b | ⊢ 𝐵 = (Base‘𝐾) |
| leatom.l | ⊢ ≤ = (le‘𝐾) |
| leatom.z | ⊢ 0 = (0.‘𝐾) |
| leatom.a | ⊢ 𝐴 = (Atoms‘𝐾) |
| Ref | Expression |
|---|---|
| leat | ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 = 𝑃 ∨ 𝑋 = 0 )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | leatom.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | leatom.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
| 3 | leatom.z | . . 3 ⊢ 0 = (0.‘𝐾) | |
| 4 | leatom.a | . . 3 ⊢ 𝐴 = (Atoms‘𝐾) | |
| 5 | 1, 2, 3, 4 | leatb 39913 | . 2 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (𝑋 ≤ 𝑃 ↔ (𝑋 = 𝑃 ∨ 𝑋 = 0 ))) |
| 6 | 5 | biimpa 480 | 1 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 = 𝑃 ∨ 𝑋 = 0 )) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∨ wo 858 ∧ w3a 1098 = wceq 1560 ∈ wcel 2142 class class class wbr 5100 ‘cfv 6521 Basecbs 17245 lecple 17293 0.cp0 18453 OPcops 39793 Atomscatm 39884 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-proset 18326 df-poset 18345 df-plt 18360 df-glb 18377 df-p0 18455 df-oposet 39797 df-covers 39887 df-ats 39888 |
| This theorem is referenced by: leat3 39916 tendoex 41596 |
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