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Description: An idiom to express that a lattice element differs from two others. (Contributed by NM, 28-May-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | latlej.b | ||
| latlej.l | |||
| latlej.j | |||
| Assertion | latnlej |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | latlej.b | ||
| 2 | latlej.l | ||
| 3 | latlej.j | ||
| 4 | 1 2 3 | latlej1 | |
| 5 | 4 | 3adant3r1 | |
| 6 | breq1 | ||
| 7 | 5 6 | syl5ibrcom | |
| 8 | 7 | necon3bd | |
| 9 | 1 2 3 | latlej2 | |
| 10 | 9 | 3adant3r1 | |
| 11 | breq1 | ||
| 12 | 10 11 | syl5ibrcom | |
| 13 | 12 | necon3bd | |
| 14 | 8 13 | jcad | |
| 15 | 14 | 3impia |