Lattice-complemented does not satisfy intermediate subgroup condition

From Groupprops

This article gives the statement, and possibly proof, of a subgroup property (i.e., lattice-complemented subgroup) not satisfying a subgroup metaproperty (i.e., intermediate subgroup condition).
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Statement

It can happen that is a lattice-complemented subgroup of , and , with not a lattice-complemented subgroup in .

Proof

Example of the symmetric group

Further information: symmetric group:S4

Let be the symmetric group on a set of size four.

Consider the subgroups:

.

is a subgroup of order two and is a subgroup of order four containing . Further:

  • is a lattice-complemented subgroup in : The symmetric group on the subset is a lattice complement to in .
  • is not a lattice-complemented subgroup in : Indeed, is a cyclic group of order four and is a subgroup of order two, and has no lattice complements.