#5202 ⟨a, b | aab=bb, abba=a⟩

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Contents

  1. Properties
  2. Finite structure
  3. Cayley table
  4. Right Cayley graph
  5. Left Cayley graph
  6. Rewriting system
  7. Same cardinality
  8. Isomorphic instances
  9. Anti-isomorphic instances

Properties

Finite structure

Elements in the center commute with all other elements.
An idempotent element x satisfies x2 = x.
The index and period of x is the least m (index) and n (period) such that x(m+n) = xm.

Cayley table

Idempotents are shown in bold.

1aba2aba3a2ba4a3ba5a4ba5b
11aba2aba3a2ba4a3ba5a4ba5b
aaa2aba3a2ba4a3ba5a4baa5bab
bba3a2ba4a3ba5a4baa5ba2aba2b
a2a2a3a2ba4a3ba5a4baa5ba2aba2b
ababa4a3ba5a4baa5ba2aba3a2ba3b
a3a3a4a3ba5a4baa5ba2aba3a2ba3b
a2ba2ba5a4baa5ba2aba3a2ba4a3ba4b
a4a4a5a4baa5ba2aba3a2ba4a3ba4b
a3ba3baa5ba2aba3a2ba4a3ba5a4ba5b
a5a5aa5ba2aba3a2ba4a3ba5a4ba5b
a4ba4ba2aba3a2ba4a3ba5a4baa5bab
a5ba5ba3a2ba4a3ba5a4baa5ba2aba2b

Right Cayley graph

Idempotents are shown in bold.

Left Cayley graph

Idempotents are shown in bold.

Rewriting system

Format:
Word:
Enter a word above to compute its normal form. Tips:
  • Lowercase letters stand for generators.
  • Spaces are ignored.
  • Numbers repeat the previous letter, e.g. b90.
Strategy:
Result: 1 
1
#RuleProof
1. a6 ⇒ a [8]
2. ba ⇒ a3 [9]
3. b2 ⇒ a2b [1]
# ab:aab=bb,abba=a a/b - -
aaaaaa=a
ba=aaa
bb=aab

Same cardinality

37 unique, 618 total

Σ#PresentationPropertiesDescriptionφ
7124⟨a, b | aab=a, bbb=1⟩Noc 1261
8458⟨a, b | aaaa=1, abbb=1⟩Grp Com 12ℤ12325
8645⟨a, b | ab=aa, bbb=b⟩Noc 121
91646⟨a, b | aab=bb, aba=a⟩Noc 122
91963⟨a, b | aba=b, aaabb=1⟩Grp 1230
91998⟨a, b | aaa=a, bbbb=a⟩Noc Com 12ℕ(12 = 4)6
92018⟨a, b | aaa=b, bbbb=a⟩Noc Com 12ℕ(12 = 1)27
92019⟨a, b | aaa=b, bbbb=b⟩Noc Com 12ℕ(12 = 3)23
92259⟨a, b | ab=aa, bbb=bb⟩Noc 12
105040⟨a, b | aaa=aa, bbbb=a⟩Noc Com 12ℕ(12 = 8)
105072⟨a, b | aaa=ab, bbbb=a⟩Noc Com 12ℕ(12 = 5)7
105092⟨a, b | aaa=bb, bbbb=a⟩Noc Com 12ℕ(12 = 2)43
105330⟨a, b | aaa=ab, bab=bb⟩Noc 121
106597⟨a, b | aaa=b, bbbb=bb⟩Noc Com 12ℕ(12 = 6)4
106660⟨a, b | aab=a, bbbb=ba⟩Noc 121
106661⟨a, b | aab=a, bbbb=bb⟩Noc 121
107105⟨a, b | ab=aa, bbaa=bb⟩Noc 122
1112897⟨a, b | aab=aaa, baaa=b⟩Noc 125
1112910⟨a, b | aab=aaa, bbbb=a⟩Noc Com 12ℕ(12 = 9)2
1115428⟨a, b | aaa=aa, abbbb=b⟩Noc 12
1115996⟨a, b | aaa=ab, aabb=bb⟩Noc 122
1116057⟨a, b | aaa=bb, aabb=ab⟩Noc 124
1116104⟨a, b | aab=aa, abab=bb⟩Noc 12
1116274⟨a, b | aab=bb, aaaa=ab⟩Noc 121
1116275⟨a, b | aab=bb, aaaa=ba⟩Noc 12
1116448⟨a, b | aba=bb, aabb=aa⟩Noc 122
1119773⟨a, b | aba=b, bbbbb=aa⟩Noc Com 12
1119917⟨a, b | aaa=b, bbbb=abb⟩Noc Com 12ℕ(12 = 7)2
1120054⟨a, b | aab=b, aaaa=bba⟩Noc 12
1120686⟨a, b | bb=aa, aaaaab=a⟩Noc Com 1215
1120787⟨a, b | ab=aa, baaaa=bb⟩Noc 127
1121086⟨a, b | bb=aa, aaaa=aba⟩Noc 124
1121092⟨a, b | bb=aa, aaab=aba⟩Noc 123
1121112⟨a, b | bb=aa, abab=aba⟩Noc 12
1124147⟨a, b | aa=a, abbbbbb=b⟩Noc 12
1124991⟨a, b | ab=a, baaaaa=bb⟩Noc 12
1125603⟨a, b | ab=a, bbaaa=bbb⟩Noc 12

Isomorphic instances

The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.

9 total

Σ#PresentationMapping
105210⟨a, b | aab=bb, baba=a⟩φ(a) = a, φ(b) = b
105214⟨a, b | aab=bb, bbaa=a⟩φ(a) = a, φ(b) = b
1112298⟨a, b | aaab=bb, aaba=a⟩φ(a) = aaaa, φ(b) = b
1112302⟨a, b | aaab=bb, abaa=a⟩φ(a) = aaaa, φ(b) = b
1112310⟨a, b | aaab=bb, baaa=a⟩φ(a) = aaaa, φ(b) = b
1115741⟨a, b | aab=bb, aaaba=a⟩φ(a) = a, φ(b) = b
1115745⟨a, b | aab=bb, aabaa=a⟩φ(a) = a, φ(b) = b
1115753⟨a, b | aab=bb, abaaa=a⟩φ(a) = a, φ(b) = b
1115769⟨a, b | aab=bb, baaaa=a⟩φ(a) = a, φ(b) = b

Anti-isomorphic instances

The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.

32 total

Σ#PresentationMapping
1119443⟨a, b | aab=a, baaaa=bb⟩φ(a) = aaa, φ(b) = b
1120585⟨a, b | ab=aa, baaaaa=b⟩φ(a) = b, φ(b) = aa
1120587⟨a, b | ab=aa, baaaab=b⟩φ(a) = b, φ(b) = aa
1120589⟨a, b | ab=aa, baaaba=b⟩φ(a) = b, φ(b) = aa
1120591⟨a, b | ab=aa, baaabb=b⟩φ(a) = b, φ(b) = aa
1120593⟨a, b | ab=aa, baabaa=b⟩φ(a) = b, φ(b) = aa
1120595⟨a, b | ab=aa, baabab=b⟩φ(a) = b, φ(b) = aa
1120597⟨a, b | ab=aa, baabba=b⟩φ(a) = b, φ(b) = aa
1120599⟨a, b | ab=aa, baabbb=b⟩φ(a) = b, φ(b) = aa
1120601⟨a, b | ab=aa, babaaa=b⟩φ(a) = b, φ(b) = aa
1120603⟨a, b | ab=aa, babaab=b⟩φ(a) = b, φ(b) = aa
1120605⟨a, b | ab=aa, bababa=b⟩φ(a) = b, φ(b) = aa
1120607⟨a, b | ab=aa, bababb=b⟩φ(a) = b, φ(b) = aa
1120609⟨a, b | ab=aa, babbaa=b⟩φ(a) = b, φ(b) = aa
1120611⟨a, b | ab=aa, babbab=b⟩φ(a) = b, φ(b) = aa
1120613⟨a, b | ab=aa, babbba=b⟩φ(a) = b, φ(b) = aa
1120615⟨a, b | ab=aa, babbbb=b⟩φ(a) = b, φ(b) = aa
1120617⟨a, b | ab=aa, bbaaaa=b⟩φ(a) = b, φ(b) = aa
1120619⟨a, b | ab=aa, bbaaab=b⟩φ(a) = b, φ(b) = aa
1120621⟨a, b | ab=aa, bbaaba=b⟩φ(a) = b, φ(b) = aa
1120623⟨a, b | ab=aa, bbaabb=b⟩φ(a) = b, φ(b) = aa
1120625⟨a, b | ab=aa, bbabaa=b⟩φ(a) = b, φ(b) = aa
1120627⟨a, b | ab=aa, bbabab=b⟩φ(a) = b, φ(b) = aa
1120629⟨a, b | ab=aa, bbabba=b⟩φ(a) = b, φ(b) = aa
1120631⟨a, b | ab=aa, bbabbb=b⟩φ(a) = b, φ(b) = aa
1120633⟨a, b | ab=aa, bbbaaa=b⟩φ(a) = b, φ(b) = aa
1120635⟨a, b | ab=aa, bbbaab=b⟩φ(a) = b, φ(b) = aa
1120637⟨a, b | ab=aa, bbbaba=b⟩φ(a) = b, φ(b) = aa
1120639⟨a, b | ab=aa, bbbabb=b⟩φ(a) = b, φ(b) = aa
1120641⟨a, b | ab=aa, bbbbaa=b⟩φ(a) = b, φ(b) = aa
1120643⟨a, b | ab=aa, bbbbab=b⟩φ(a) = b, φ(b) = aa
1120645⟨a, b | ab=aa, bbbbba=b⟩φ(a) = b, φ(b) = aa