#21039 ⟨a, b | ab=aa, bbba=bbb⟩

Properties

Presentation has sum-of-sides 11
Finite non-commutative monoid with 16 elements

Element profile

1 element center:
- 1
5 idempotent elements:
- 1, b³, a⁴, ba⁴, b²a⁴
4 left zero elements:
- b³, a⁴, ba⁴, b²a⁴

Complete rewriting system

Format:	Pretty Plain
Word to reduce:
	Tips: Lowercase letters stand for generators. Spaces are ignored. Numbers repeat the previous letter, e.g. `b90`.
Reduction strategy:	Leftmost Rightmost
Path to normal form:	1 1

Reduction order:
- Left-to-right shortlex with a < b

ab ⇒ a²
b³a ⇒ b³
b⁴ ⇒ b³
a⁵ ⇒ a⁴

# ab:ab=aa,bbba=bbb ab
ab=aa
bbba=bbb
bbbb=bbb
aaaaa=aaaa

Cayley table

Idempotents are shown in bold.

	1	a	b	a²	ba	b²	a³	ba²	b²a	b³	a⁴	ba³	b²a²	ba⁴	b²a³	b²a⁴
1	1	a	b	a²	ba	b²	a³	ba²	b²a	b³	a⁴	ba³	b²a²	ba⁴	b²a³	b²a⁴
a	a	a²	a²	a³	a³	a³	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴
b	b	ba	b²	ba²	b²a	b³	ba³	b²a²	b³	b³	ba⁴	b²a³	b³	b²a⁴	b³	b³
a²	a²	a³	a³	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴
ba	ba	ba²	ba²	ba³	ba³	ba³	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴
b²	b²	b²a	b³	b²a²	b³	b³	b²a³	b³	b³	b³	b²a⁴	b³	b³	b³	b³	b³
a³	a³	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴
ba²	ba²	ba³	ba³	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴
b²a	b²a	b²a²	b²a²	b²a³	b²a³	b²a³	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴
b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³	b³
a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴	a⁴
ba³	ba³	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴
b²a²	b²a²	b²a³	b²a³	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴
ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴	ba⁴
b²a³	b²a³	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴
b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴	b²a⁴

Right Cayley graph

Idempotents are shown in bold.

Left Cayley graph

Idempotents are shown in bold.

Others with same cardinality

20 unique, 175 total

Σ	#	Presentation	Description	Related
8	628	⟨a, b \| bb=aa, abab=1⟩	Finite non-Abelian group with 16 elements	58 iso
9	1331	⟨a, b \| aaaa=b, bbbb=1⟩	Isomorphic to ℤ₁₆	67 iso
9	2051	⟨a, b \| aab=a, bbbb=b⟩	Finite non-commutative monoid with 16 elements	4 anti-iso
10	3808	⟨a, b \| aaab=ba, abab=1⟩	Finite non-Abelian group with 16 elements	7 iso
10	4630	⟨a, b \| aaaa=a, bbbb=a⟩	Isomorphic to ℕ_{(16 = 4)}	1 iso
10	4648	⟨a, b \| aaaa=b, bbbb=a⟩	Isomorphic to ℕ_{(16 = 1)}	5 iso
10	6205	⟨a, b \| aba=b, aaaabb=1⟩	Finite non-Abelian group with 16 elements	3 iso
11	12164	⟨a, b \| aaaa=aa, bbbb=a⟩	Isomorphic to ℕ_{(16 = 8)}
11	12194	⟨a, b \| aaaa=ab, bbbb=a⟩	Isomorphic to ℕ_{(16 = 5)}	2 iso
11	12212	⟨a, b \| aaaa=bb, bbbb=a⟩	Isomorphic to ℕ_{(16 = 2)}
11	12306	⟨a, b \| aaab=bb, abba=a⟩	Finite non-commutative monoid with 16 elements	6 iso
11	13251	⟨a, b \| bab=aab, bbb=aa⟩	Finite non-commutative monoid with 16 elements
11	13259	⟨a, b \| bab=aba, bbb=aa⟩	Finite non-commutative monoid with 16 elements
11	16028	⟨a, b \| aaa=ab, babb=bb⟩	Finite non-commutative monoid with 16 elements
11	16032	⟨a, b \| aaa=ab, bbaa=bb⟩	Finite non-commutative monoid with 16 elements
11	16060	⟨a, b \| aaa=bb, abab=aa⟩	Finite non-commutative monoid with 16 elements
11	16371	⟨a, b \| aba=aa, bbbb=ab⟩	Finite non-commutative monoid with 16 elements
11	18811	⟨a, b \| aaa=b, abbbbb=b⟩	Isomorphic to ℕ_{(16 = 3)}	2 iso
11	20251	⟨a, b \| aba=b, aaaa=abb⟩	Finite non-commutative monoid with 16 elements
11	24660	⟨a, b \| aa=a, ababab=bb⟩	Finite non-commutative monoid with 16 elements

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