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Description: Alternate definition of the commutes relation. Remark in Kalmbach p. 23. ( cmbr2i analog.) (Contributed by NM, 8-Nov-2011) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cmtbr2.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| cmtbr2.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| cmtbr2.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | ||
| cmtbr2.o | ⊢ ⊥ = ( oc ‘ 𝐾 ) | ||
| cmtbr2.c | ⊢ 𝐶 = ( cm ‘ 𝐾 ) | ||
| Assertion | cmtbr2N | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 𝐶 𝑌 ↔ 𝑋 = ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cmtbr2.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| 2 | cmtbr2.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 3 | cmtbr2.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | |
| 4 | cmtbr2.o | ⊢ ⊥ = ( oc ‘ 𝐾 ) | |
| 5 | cmtbr2.c | ⊢ 𝐶 = ( cm ‘ 𝐾 ) | |
| 6 | 1 4 5 | cmt4N | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 𝐶 𝑌 ↔ ( ⊥ ‘ 𝑋 ) 𝐶 ( ⊥ ‘ 𝑌 ) ) ) |
| 7 | simp1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝐾 ∈ OML ) | |
| 8 | omlop | ⊢ ( 𝐾 ∈ OML → 𝐾 ∈ OP ) | |
| 9 | 8 | 3ad2ant1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝐾 ∈ OP ) |
| 10 | simp2 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝑋 ∈ 𝐵 ) | |
| 11 | 1 4 | opoccl | ⊢ ( ( 𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ) → ( ⊥ ‘ 𝑋 ) ∈ 𝐵 ) |
| 12 | 9 10 11 | syl2anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ 𝑋 ) ∈ 𝐵 ) |
| 13 | simp3 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝑌 ∈ 𝐵 ) | |
| 14 | 1 4 | opoccl | ⊢ ( ( 𝐾 ∈ OP ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ 𝑌 ) ∈ 𝐵 ) |
| 15 | 9 13 14 | syl2anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ 𝑌 ) ∈ 𝐵 ) |
| 16 | 1 2 3 4 5 | cmtvalN | ⊢ ( ( 𝐾 ∈ OML ∧ ( ⊥ ‘ 𝑋 ) ∈ 𝐵 ∧ ( ⊥ ‘ 𝑌 ) ∈ 𝐵 ) → ( ( ⊥ ‘ 𝑋 ) 𝐶 ( ⊥ ‘ 𝑌 ) ↔ ( ⊥ ‘ 𝑋 ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ) ) |
| 17 | 7 12 15 16 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( ⊥ ‘ 𝑋 ) 𝐶 ( ⊥ ‘ 𝑌 ) ↔ ( ⊥ ‘ 𝑋 ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ) ) |
| 18 | eqcom | ⊢ ( 𝑋 = ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ↔ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = 𝑋 ) | |
| 19 | 18 | a1i | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 = ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ↔ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = 𝑋 ) ) |
| 20 | omllat | ⊢ ( 𝐾 ∈ OML → 𝐾 ∈ Lat ) | |
| 21 | 20 | 3ad2ant1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝐾 ∈ Lat ) |
| 22 | 1 2 | latjcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 ∨ 𝑌 ) ∈ 𝐵 ) |
| 23 | 20 22 | syl3an1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 ∨ 𝑌 ) ∈ 𝐵 ) |
| 24 | 1 2 | latjcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ ( ⊥ ‘ 𝑌 ) ∈ 𝐵 ) → ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ∈ 𝐵 ) |
| 25 | 21 10 15 24 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ∈ 𝐵 ) |
| 26 | 1 3 | latmcl | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑋 ∨ 𝑌 ) ∈ 𝐵 ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ∈ 𝐵 ) → ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ∈ 𝐵 ) |
| 27 | 21 23 25 26 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ∈ 𝐵 ) |
| 28 | 1 4 | opcon3b | ⊢ ( ( 𝐾 ∈ OP ∧ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ) → ( ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = 𝑋 ↔ ( ⊥ ‘ 𝑋 ) = ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) ) |
| 29 | 9 27 10 28 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = 𝑋 ↔ ( ⊥ ‘ 𝑋 ) = ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) ) |
| 30 | omlol | ⊢ ( 𝐾 ∈ OML → 𝐾 ∈ OL ) | |
| 31 | 30 | 3ad2ant1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → 𝐾 ∈ OL ) |
| 32 | 1 2 3 4 | oldmm1 | ⊢ ( ( 𝐾 ∈ OL ∧ ( 𝑋 ∨ 𝑌 ) ∈ 𝐵 ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ∈ 𝐵 ) → ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) = ( ( ⊥ ‘ ( 𝑋 ∨ 𝑌 ) ) ∨ ( ⊥ ‘ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| 33 | 31 23 25 32 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) = ( ( ⊥ ‘ ( 𝑋 ∨ 𝑌 ) ) ∨ ( ⊥ ‘ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| 34 | 1 2 3 4 | oldmj1 | ⊢ ( ( 𝐾 ∈ OL ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ ( 𝑋 ∨ 𝑌 ) ) = ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ) |
| 35 | 30 34 | syl3an1 | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ ( 𝑋 ∨ 𝑌 ) ) = ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ) |
| 36 | 1 2 3 4 | oldmj1 | ⊢ ( ( 𝐾 ∈ OL ∧ 𝑋 ∈ 𝐵 ∧ ( ⊥ ‘ 𝑌 ) ∈ 𝐵 ) → ( ⊥ ‘ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) |
| 37 | 31 10 15 36 | syl3anc | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) = ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) |
| 38 | 35 37 | oveq12d | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( ⊥ ‘ ( 𝑋 ∨ 𝑌 ) ) ∨ ( ⊥ ‘ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| 39 | 33 38 | eqtrd | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| 40 | 39 | eqeq2d | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( ⊥ ‘ 𝑋 ) = ( ⊥ ‘ ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ↔ ( ⊥ ‘ 𝑋 ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ) ) |
| 41 | 19 29 40 | 3bitrrd | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( ( ⊥ ‘ 𝑋 ) = ( ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ 𝑌 ) ) ∨ ( ( ⊥ ‘ 𝑋 ) ∧ ( ⊥ ‘ ( ⊥ ‘ 𝑌 ) ) ) ) ↔ 𝑋 = ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) |
| 42 | 6 17 41 | 3bitrd | ⊢ ( ( 𝐾 ∈ OML ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑋 𝐶 𝑌 ↔ 𝑋 = ( ( 𝑋 ∨ 𝑌 ) ∧ ( 𝑋 ∨ ( ⊥ ‘ 𝑌 ) ) ) ) ) |