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The square tiling is the honeycomb product of two apeirogons (outlined in blue).
|Dimension formula||[note 1]|
|Element formula||[note 2]|
|Algebraic structure||Coummutative semigroup[note 3]|
|Uniquely factorizable||Yes[note 5]|
The honeycomb product or comb product for short, also known as the topological product, is one of four polytope products along with the prism, tegum and pyramid products. The honeycomb product of two euclidean honeycombs is itself an euclidean honeycomb.
The comb product of two polytopes is known as a duocomb, and a multicomb for more than two polytopes. Polygonal multicombs are regular polytopes, for example the square duocomb.
If is an abstract polytope of rank and is an abstract polytope of rank , then the honeycomb product is defined to be:
with the order:
- ↑ For .
- ↑ For .
- ↑ It forms a monoid on partial orders but its identity is not an abstract polytope.
- ↑ Not an abstract polytope.
- ↑ With the exception of the annihilator.
- ↑ 1.0 1.1 1.2 1.3 1.4 Gleason, Ian; Hubard, Isabel (2018). "Products of abstract polytopes" (PDF). Journal of Combinatorial Theory, Series A. 157: 287–320. doi:10.1016/j.jcta.2018.02.002.
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