Alternate names

• Expanded 6-simplex
• Small terated tetradecapeton (Acronym: staf) (Jonathan Bowers)^[1]

Cross-sections

The maximal cross-section of the pentellated 6-simplex with a 5-dimensional hyperplane is a stericated hexateron. This cross-section divides the pentellated 6-simplex into two hexateral hypercupolas consisting of 7 5-simplexes, 21 5-cell prisms and 35 Tetrahedral-Triangular duoprisms each.

Coordinates

The vertices of the pentellated 6-simplex can be positioned in 7-space as permutations of (0,1,1,1,1,1,2). This construction is based on facets of the pentellated 7-orthoplex.

A second construction in 7-space, from the center of a rectified 7-orthoplex is given by coordinate permutations of:

(1,-1,0,0,0,0,0)

Root vectors

Its 42 vertices represent the root vectors of the simple Lie group A₆. It is the vertex figure of the 6-simplex honeycomb.

Images

More information Ak Coxeter plane, A6 ...

orthographic projections

Ak Coxeter plane	A6	A5	A4
Graph
Symmetry	[[7]](*)=[14]	[6]	[[5]](*)=[10]
Ak Coxeter plane	A3	A2
Graph
Symmetry	[4]	[[3]](*)=[6]

Close

Note: (*) Symmetry doubled for A_k graphs with even k due to symmetrically-ringed Coxeter-Dynkin diagram.

Configuration

This configuration matrix represents the expanded 6-simplex, with 12 permutations of elements. The rows and columns correspond to vertices, edges, faces, cells, 4-faces and 5-faces. The diagonal numbers say how many of each element occur in the whole polytope. The nondiagonal numbers say how many of the column's element occur in or at the row's element.^[2]

More information Element, fk ...

Element	fk	f0	f1	f2		f3		f4			f5
	f0	42	10	20	20	20	60	10	40	30	2	10	20
	f1	2	210	4	4	6	18	4	16	12	1	5	10
	f2	3	3	280	*	3	3	3	6	3	1	3	4
		4	4	*	210	0	6	0	6	6	0	2	6
	f3	4	6	4	0	210	*	2	2	0	1	2	1
		6	9	2	3	*	420	0	2	2	0	1	3
	f4	5	10	10	0	5	0	84	*	*	1	1	0
		8	16	8	6	2	4	*	210	*	0	1	1
		9	18	6	9	0	6	*	*	140	0	0	2
	f5	6	15	20	0	15	0	6	0	0	14	*	*
		10	25	20	10	10	10	2	5	0	*	42	*
		12	30	16	18	3	18	0	3	4	*	*	70

Close

Alternate names

• Teracellated heptapeton (Acronym: tocal) (Jonathan Bowers)^[3]

Coordinates

The vertices of the runcitruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,1,1,2,3). This construction is based on facets of the runcitruncated 7-orthoplex.

Images

Alternate names

• Teriprismated heptapeton (Acronym: topal) (Jonathan Bowers)^[4]

Coordinates

The vertices of the runcicantellated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,1,1,2,3). This construction is based on facets of the penticantellated 7-orthoplex.

Images

Alternate names

• Terigreatorhombated heptapeton (Acronym: togral) (Jonathan Bowers)^[5]

Coordinates

The vertices of the penticantitruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,1,2,3,4). This construction is based on facets of the penticantitruncated 7-orthoplex.

Images

Alternate names

• Tericellirhombated heptapeton (Acronym: tocral) (Jonathan Bowers)^[6]

Coordinates

The vertices of the pentiruncitruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,1,2,3,4). This construction is based on facets of the pentiruncitruncated 7-orthoplex.

Images

Alternate names

• Teriprismatorhombated tetradecapeton (Acronym: taporf) (Jonathan Bowers)^[7]

Coordinates

The vertices of the pentiruncicantellated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,2,3,3,4). This construction is based on facets of the pentiruncicantellated 7-orthoplex.

Images

Note: (*) Symmetry doubled for A_k graphs with even k due to symmetrically-ringed Coxeter-Dynkin diagram.

Alternate names

• Terigreatoprismated heptapeton (Acronym: tagopal) (Jonathan Bowers)^[8]

Coordinates

The vertices of the pentiruncicantitruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,1,2,3,4,5). This construction is based on facets of the pentiruncicantitruncated 7-orthoplex.

Images

Alternate names

• Tericellitruncated tetradecapeton (Acronym: tactaf) (Jonathan Bowers)^[9]

Coordinates

The vertices of the pentisteritruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,2,2,2,3,4). This construction is based on facets of the pentisteritruncated 7-orthoplex.

Images

Note: (*) Symmetry doubled for A_k graphs with even k due to symmetrically-ringed Coxeter-Dynkin diagram.

Alternate names

• Great teracellirhombated heptapeton (Acronym: gatocral) (Jonathan Bowers)^[10]

Coordinates

The vertices of the pentistericantittruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,2,2,3,4,5). This construction is based on facets of the pentistericantitruncated 7-orthoplex.

Images

Alternate names

• Pentisteriruncicantitruncated 6-simplex (Johnson's omnitruncation for 6-polytopes)
• Omnitruncated heptapeton
• Great terated tetradecapeton (Acronym: gotaf) (Jonathan Bowers)^[11]

Permutohedron and related tessellation

The omnitruncated 6-simplex is the permutohedron of order 7. The omnitruncated 6-simplex is a zonotope, the Minkowski sum of seven line segments parallel to the seven lines through the origin and the seven vertices of the 6-simplex.

Like all uniform omnitruncated n-simplices, the omnitruncated 6-simplex can tessellate space by itself, in this case 6-dimensional space with three facets around each hypercell. It has Coxeter-Dynkin diagram of .

Coordinates

The vertices of the omnitruncated 6-simplex can be most simply positioned in 7-space as permutations of (0,1,2,3,4,5,6). This construction is based on facets of the pentisteriruncicantitruncated 7-orthoplex, t_0,1,2,3,4,5{3⁵,4}, .

Images

Note: (*) Symmetry doubled for A_k graphs with even k due to symmetrically-ringed Coxeter-Dynkin diagram.

Configuration

This configuration matrix represents the omnitruncated 6-simplex, with 35 permutations of elements. The rows and columns correspond to vertices, edges, faces, cells, 4-faces and 5-faces. The diagonal numbers say how many of each element occur in the whole polytope. The nondiagonal numbers say how many of the column's element occur in or at the row's element.^[12]

More information Element, fk ...

Element	fk	f0	f1			f2									f3										f4									f5
	f0	5040	2	2	2	2	2	2	2	1	2	2	1	1	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	2	1	1	2	2	2
	f1	2	5040	*	*	1	1	1	1	1	0	0	0	0	1	1	1	2	1	1	2	1	0	0	1	1	2	1	2	1	1	1	0	1	2	2
		2	*	5040	*	1	0	0	1	0	1	1	1	0	1	1	2	1	0	1	0	1	1	2	1	2	1	2	1	1	1	0	1	2	1	2
		2	*	*	5040	0	1	1	0	0	1	1	0	1	1	1	0	0	2	1	1	1	2	1	2	1	1	1	1	0	2	1	1	2	2	1
	f2	6	3	3	0	1680	*	*	*	*	*	*	*	*	1	1	1	1	0	0	0	0	0	0	1	1	1	1	1	1	0	0	0	1	1	2
		4	2	0	2	*	2520	*	*	*	*	*	*	*	1	0	0	0	1	1	1	0	0	0	1	1	1	0	1	0	1	1	0	1	2	1
		4	2	0	2	*	*	2520	*	*	*	*	*	*	0	1	0	0	1	0	1	1	0	0	1	0	1	1	1	0	1	1	0	1	2	1
		4	2	2	0	*	*	*	2520	*	*	*	*	*	0	0	1	1	0	1	0	1	0	0	0	1	1	1	1	1	1	0	0	1	1	2
		4	4	0	0	*	*	*	*	1260	*	*	*	*	0	0	0	2	0	0	2	0	0	0	0	0	2	0	2	1	0	1	0	0	2	2
		6	0	3	3	*	*	*	*	*	1680	*	*	*	1	0	0	0	0	0	0	1	1	1	1	1	1	1	0	0	1	0	1	2	1	1
		4	0	2	2	*	*	*	*	*	*	2520	*	*	0	1	0	0	0	1	0	0	1	1	1	1	0	1	1	0	1	0	1	2	1	1
		4	0	4	0	*	*	*	*	*	*	*	1260	*	0	0	2	0	0	0	0	0	0	2	0	2	0	2	0	1	0	0	1	2	0	2
		6	0	0	6	*	*	*	*	*	*	*	*	840	0	0	0	0	2	0	0	0	2	0	2	0	0	0	0	0	2	1	1	2	2	0
	f3	24	12	12	12	4	6	0	0	0	4	0	0	0	420	*	*	*	*	*	*	*	*	*	1	1	1	0	0	0	0	0	0	1	1	1
		12	6	6	6	2	0	3	0	0	0	3	0	0	*	840	*	*	*	*	*	*	*	*	1	0	0	1	1	0	0	0	0	1	1	1
		12	6	12	0	2	0	0	3	0	0	0	3	0	*	*	840	*	*	*	*	*	*	*	0	1	0	1	0	1	0	0	0	1	0	2
		12	12	6	0	2	0	0	3	3	0	0	0	0	*	*	*	840	*	*	*	*	*	*	0	0	1	0	1	1	0	0	0	0	1	2
		12	6	0	12	0	3	3	0	0	0	0	0	2	*	*	*	*	840	*	*	*	*	*	1	0	0	0	0	0	1	1	0	1	2	0
		8	4	4	4	0	2	0	2	0	0	2	0	0	*	*	*	*	*	1260	*	*	*	*	0	1	0	0	1	0	1	0	0	1	1	1
		8	8	0	4	0	2	2	0	2	0	0	0	0	*	*	*	*	*	*	1260	*	*	*	0	0	1	0	1	0	0	1	0	0	2	1
		12	6	6	6	0	0	3	3	0	2	0	0	0	*	*	*	*	*	*	*	840	*	*	0	0	1	1	0	0	1	0	0	1	1	1
		24	0	12	24	0	0	0	0	0	4	6	0	4	*	*	*	*	*	*	*	*	420	*	1	0	0	0	0	0	1	0	1	2	1	0
		12	0	12	6	0	0	0	0	0	2	3	3	0	*	*	*	*	*	*	*	*	*	840	0	1	0	1	0	0	0	0	1	2	0	1
	f4	120	60	60	120	20	30	30	0	0	20	30	0	20	5	10	0	0	10	0	0	0	5	0	84	*	*	*	*	*	*	*	*	1	1	0
		48	24	48	24	8	12	0	12	0	8	12	12	0	2	0	4	0	0	6	0	0	0	4	*	210	*	*	*	*	*	*	*	1	0	1
		48	48	24	24	8	12	12	12	12	8	0	0	0	2	0	0	4	0	0	6	4	0	0	*	*	210	*	*	*	*	*	*	0	1	1
		36	18	36	18	6	0	9	9	0	6	9	9	0	0	3	3	0	0	0	0	3	0	3	*	*	*	280	*	*	*	*	*	1	0	1
		24	24	12	12	4	6	6	6	6	0	6	0	0	0	2	0	2	0	3	3	0	0	0	*	*	*	*	420	*	*	*	*	0	1	1
		36	36	36	0	12	0	0	18	9	0	0	9	0	0	0	6	6	0	0	0	0	0	0	*	*	*	*	*	140	*	*	*	0	0	2
		48	24	24	48	0	12	12	12	0	8	12	0	8	0	0	0	0	4	6	0	4	2	0	*	*	*	*	*	*	210	*	*	1	1	0
		24	24	0	24	0	12	12	0	6	0	0	0	4	0	0	0	0	4	0	6	0	0	0	*	*	*	*	*	*	*	210	*	0	2	0
		120	0	120	120	0	0	0	0	0	40	60	30	20	0	0	0	0	0	0	0	0	10	20	*	*	*	*	*	*	*	*	42	2	0	0
	f5	720	360	720	720	120	180	180	180	0	240	360	180	120	30	60	60	0	60	90	0	60	60	120	6	15	0	20	0	0	15	0	6	14	*	*
		240	240	120	240	40	120	120	60	60	40	60	0	40	10	20	0	20	40	30	60	20	10	0	2	0	5	0	10	0	5	10	0	*	42	*
		144	144	144	72	48	36	36	72	36	24	36	36	0	6	12	24	24	0	18	18	12	0	12	0	3	3	4	6	4	0	0	0	*	*	70

Close

Full snub 6-simplex

The full snub 6-simplex or omnisnub 6-simplex, defined as an alternation of the omnitruncated 6-simplex is not uniform, but it can be given Coxeter diagram and symmetry [[3,3,3,3,3]]⁺, and constructed from 14 snub 5-simplexes, 42 snub 5-cell antiprisms, 70 3-s{3,4} duoantiprisms, and 2520 irregular 5-simplexes filling the gaps at the deleted vertices.