Revision history [back]
 | 1 | initial version |
Like this maybe
sage: L = posets.TamariLattice(2)
sage: U = L.dual() * L
sage: S = U.subposet((x,y) for x,y in U if not P.le(y,x))
| | 2 | No.2 Revision |
Like this maybe
sage: L = posets.TamariLattice(2)
sage: U = L.dual() * L
sage: S = U.subposet((x,y) for x,y in U if not P.le(y,x))
L.le(y,x))
