#2048 ⟨
a
,
b
|
abaabbba
=
bb
⟩
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Monoid enumeration
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#2047
⟨
a
,
b
|
abaabbba
=
ba
⟩
Next:
#2049
⟨
a
,
b
|
ababaaab
=
aa
⟩
Contents
Properties
Rewriting system
Properties
Sum of relation sides is 10
Infinite cancellative non-commutative monoid
Element
a
has infinite order
Submonoid of enveloping group: ⟨
a
,
b
|
aaabbaba
-1
a
-1
b
⟩
Embedding:
φ
(
a
) =
ab
,
φ
(
b
) =
a
-1
Rewriting system
Format:
Pretty
Plain
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:
Leftmost
Rightmost
Result:
1
1
Reduction order:
Left-to-right shortlex with
b
<
a
Certificate
: derivations of all rewriting rules from the defining relations.
#
Rule
Proof
1.
ab
a
2
b
3
a
⇒
b
2
[1]
2.
ab
a
2
b
5
⇒
b
3
a
2
b
3
a
[2]
# ab:abaabbba=bb ba - - abaabbba=bb abaabbbbb=bbbaabbba