Description: Show that when N is an atom, it is not under W . TODO: Is there a shorter direct proof? TODO: should we eliminate ( FP ) =/= P here? (Contributed by NM, 29-May-2013)
Ref | Expression | ||
---|---|---|---|
Hypotheses | cdlemg12.l | |
|
cdlemg12.j | |
||
cdlemg12.m | |
||
cdlemg12.a | |
||
cdlemg12.h | |
||
cdlemg12.t | |
||
cdlemg12b.r | |
||
cdlemg31.n | |
||
Assertion | cdlemg31c | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cdlemg12.l | |
|
2 | cdlemg12.j | |
|
3 | cdlemg12.m | |
|
4 | cdlemg12.a | |
|
5 | cdlemg12.h | |
|
6 | cdlemg12.t | |
|
7 | cdlemg12b.r | |
|
8 | cdlemg31.n | |
|
9 | simp11l | |
|
10 | simp11r | |
|
11 | 9 10 | jca | |
12 | simp13 | |
|
13 | simp31 | |
|
14 | 13 | necomd | |
15 | simp12 | |
|
16 | simp2r | |
|
17 | simp32 | |
|
18 | 1 4 5 6 7 | trlat | |
19 | 11 15 16 17 18 | syl112anc | |
20 | 1 5 6 7 | trlle | |
21 | 11 16 20 | syl2anc | |
22 | simp2l | |
|
23 | 1 2 4 5 | lhp2atnle | |
24 | 11 12 14 19 21 22 23 | syl321anc | |
25 | simp12l | |
|
26 | simp13l | |
|
27 | simp2ll | |
|
28 | 1 2 3 4 5 6 7 8 | cdlemg31a | |
29 | 9 10 25 26 27 16 28 | syl222anc | |
30 | 29 | adantr | |
31 | simp111 | |
|
32 | simp112 | |
|
33 | simp3 | |
|
34 | 33 | necomd | |
35 | simp12l | |
|
36 | simp133 | |
|
37 | simp2 | |
|
38 | 1 2 4 5 | lhp2atnle | |
39 | 31 32 34 35 36 37 38 | syl312anc | |
40 | 39 | 3expia | |
41 | 40 | necon4ad | |
42 | 30 41 | mpd | |
43 | 1 2 3 4 5 6 7 8 | cdlemg31b | |
44 | 9 10 25 26 27 16 43 | syl222anc | |
45 | 44 | adantr | |
46 | 42 45 | eqbrtrrd | |
47 | 24 46 | mtand | |