Alfredo Andreini
Encyclopedia
Alfredo Andreini was an Italian physician and entomologist.
He carried out a large collection of insect
s collected in particular from Cape Verde
(1908) and in Libya
(1913) and Eritrea
. He collaborated with the zoological museum La Specola
.
In geometry
, he enumerated and published a list of 25 convex uniform honeycomb
s in 1905 (the space-filling tessellation
s of regular
and semiregular
polyhedra). This was the most complete list published until approximately 1991 when Norman Johnson completed the full list of 28 forms.
He carried out a large collection of insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...
s collected in particular from Cape Verde
Cape Verde
The Republic of Cape Verde is an island country, spanning an archipelago of 10 islands located in the central Atlantic Ocean, 570 kilometres off the coast of Western Africa...
(1908) and in Libya
Libya
Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west....
(1913) and Eritrea
Eritrea
Eritrea , officially the State of Eritrea, is a country in the Horn of Africa. Eritrea derives it's name from the Greek word Erethria, meaning 'red land'. The capital is Asmara. It is bordered by Sudan in the west, Ethiopia in the south, and Djibouti in the southeast...
. He collaborated with the zoological museum La Specola
La Specola
Museum of Zoology and Natural History, best known as La Specola, is a museum in Florence, central Italy, located next to the Pitti Palace. The name "Specola" means observatory, a reference to the astronomical observatory founded there in 1790...
.
In geometry
Geometry
Geometry arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers ....
, he enumerated and published a list of 25 convex uniform honeycomb
Convex uniform honeycomb
In geometry, a convex uniform honeycomb is a uniform tessellation which fills three-dimensional Euclidean space with non-overlapping convex uniform polyhedral cells.Twenty-eight such honeycombs exist:* the familiar cubic honeycomb and 7 truncations thereof;...
s in 1905 (the space-filling tessellation
Honeycomb (geometry)
In geometry, a honeycomb is a space filling or close packing of polyhedral or higher-dimensional cells, so that there are no gaps. It is an example of the more general mathematical tiling or tessellation in any number of dimensions....
s of regular
Regular polyhedron
A regular polyhedron is a polyhedron whose faces are congruent regular polygons which are assembled in the same way around each vertex. A regular polyhedron is highly symmetrical, being all of edge-transitive, vertex-transitive and face-transitive - i.e. it is transitive on its flags...
and semiregular
Semiregular polyhedron
The term semiregular polyhedron is used variously by different authors.In its original definition, it is a polyhedron with regular faces and a symmetry group which is transitive on its vertices, which is more commonly referred to today as a uniform polyhedron...
polyhedra). This was the most complete list published until approximately 1991 when Norman Johnson completed the full list of 28 forms.