#17226: LatticePoset: add Frattini sublattice
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.9
Component: combinatorics | Resolution:
Keywords: poset, lattice | Merged in:
Authors: Jori Mäntysalo | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/frattini_sublattice | b20f025dc034b16e3f1d53968668030131ef8ae1
Dependencies: #18567 | Stopgaps:
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Changes (by jmantysalo):
* status: new => needs_review
Comment:
Replying to [comment:7 tscrim]:
> No, what you did is correct.
Good.
Then I mark this as needs_review. I also added this and
`maximal_sublattices()` to index of functions.
I put the symbol of Frattini sublattice to documentation. Maybe it helps
the reader, maybe not? I also use definition where Frattini sublattice of
a lattice without proper sublattices (i.e. 1-element lattice) is the
lattice itself. Compare to Frattini subgroup of 1-element group.
I did not found any good and simple example. But they can be added later.
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Ticket URL: <http://trac.sagemath.org/ticket/17226#comment:9>
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