#5221 ⟨
a
,
b
|
aabbaab
=
bbba
⟩
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Monoid enumeration
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#5220
⟨
a
,
b
|
aabbaab
=
bbab
⟩
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#5222
⟨
a
,
b
|
aabbaab
=
bbbb
⟩
Contents
Properties
Rewriting system
Properties
Sum of relation sides is 11
Infinite cancellative non-commutative monoid
Element
a
has infinite order
Submonoid of enveloping group: ⟨
a
,
b
|
aaabba
-1
a
-1
bba
-1
b
-1
⟩
Embedding:
φ
(
a
) =
b
,
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:
Right-to-left recursive path with deg(
a
) = 0; deg(
b
) = 1
Certificate
: derivations of all rewriting rules from the defining relations.
#
Rule
Proof
1.
b
3
a
⇒
a
2
b
2
a
2
b
[1]
# ab:aabbaab=bbba reversed:a/b - - bbba=aabbaab