#12607 ⟨
a
,
b
|
abbb
=
aa
,
bbbb
=
b
⟩
Up:
Monoids with two generators and two relations
Prev:
#12606
⟨
a
,
b
|
abbb
=
aa
,
bbbb
=
a
⟩
Next:
#12609
⟨
a
,
b
|
abbb
=
ab
,
bbbb
=
b
⟩
Quick links
Properties
Rewriting system
Properties
Presentation has sum-of-sides 11
Infinite non-commutative monoid
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 recursive path with deg(
b
) = 0; deg(
a
) = 1
Certificate
: derivations of all rewriting rules from the defining relations.
#
Rule
Proof
1.
b
4
⇒
b
[2]
2.
a
2
⇒
a
b
3
[1]
3.
a
b
3
a
⇒
a
b
3
[3]
# ab:abbb=aa,bbbb=b b/a bbbb=b aa=abbb abbba=abbb