Step | Hyp | Ref
| Expression |
1 | | ismred2.ss |
. 2
β’ (π β πΆ β π« π) |
2 | | eqid 2733 |
. . . 4
β’ β
=
β
|
3 | | rint0 4994 |
. . . 4
β’ (β
= β
β (π β©
β© β
) = π) |
4 | 2, 3 | ax-mp 5 |
. . 3
β’ (π β© β© β
) = π |
5 | | 0ss 4396 |
. . . 4
β’ β
β πΆ |
6 | | 0ex 5307 |
. . . . 5
β’ β
β V |
7 | | sseq1 4007 |
. . . . . . 7
β’ (π = β
β (π β πΆ β β
β πΆ)) |
8 | 7 | anbi2d 630 |
. . . . . 6
β’ (π = β
β ((π β§ π β πΆ) β (π β§ β
β πΆ))) |
9 | | inteq 4953 |
. . . . . . . 8
β’ (π = β
β β© π =
β© β
) |
10 | 9 | ineq2d 4212 |
. . . . . . 7
β’ (π = β
β (π β© β© π ) =
(π β© β© β
)) |
11 | 10 | eleq1d 2819 |
. . . . . 6
β’ (π = β
β ((π β© β© π )
β πΆ β (π β© β© β
) β πΆ)) |
12 | 8, 11 | imbi12d 345 |
. . . . 5
β’ (π = β
β (((π β§ π β πΆ) β (π β© β© π ) β πΆ) β ((π β§ β
β πΆ) β (π β© β© β
)
β πΆ))) |
13 | | ismred2.in |
. . . . 5
β’ ((π β§ π β πΆ) β (π β© β© π ) β πΆ) |
14 | 6, 12, 13 | vtocl 3550 |
. . . 4
β’ ((π β§ β
β πΆ) β (π β© β© β
)
β πΆ) |
15 | 5, 14 | mpan2 690 |
. . 3
β’ (π β (π β© β© β
)
β πΆ) |
16 | 4, 15 | eqeltrrid 2839 |
. 2
β’ (π β π β πΆ) |
17 | | simp2 1138 |
. . . . 5
β’ ((π β§ π β πΆ β§ π β β
) β π β πΆ) |
18 | 1 | 3ad2ant1 1134 |
. . . . 5
β’ ((π β§ π β πΆ β§ π β β
) β πΆ β π« π) |
19 | 17, 18 | sstrd 3992 |
. . . 4
β’ ((π β§ π β πΆ β§ π β β
) β π β π« π) |
20 | | simp3 1139 |
. . . 4
β’ ((π β§ π β πΆ β§ π β β
) β π β β
) |
21 | | rintn0 5112 |
. . . 4
β’ ((π β π« π β§ π β β
) β (π β© β© π ) = β©
π ) |
22 | 19, 20, 21 | syl2anc 585 |
. . 3
β’ ((π β§ π β πΆ β§ π β β
) β (π β© β© π ) = β©
π ) |
23 | 13 | 3adant3 1133 |
. . 3
β’ ((π β§ π β πΆ β§ π β β
) β (π β© β© π ) β πΆ) |
24 | 22, 23 | eqeltrrd 2835 |
. 2
β’ ((π β§ π β πΆ β§ π β β
) β β© π
β πΆ) |
25 | 1, 16, 24 | ismred 17543 |
1
β’ (π β πΆ β (Mooreβπ)) |