#4628 ⟨
a
,
b
|
aabaabba
=
aab
⟩
Up:
Monoids with two generators and one relation
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#4627
⟨
a
,
b
|
aabaabba
=
aaa
⟩
Next:
#4629
⟨
a
,
b
|
aabaabba
=
aba
⟩
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(
c
) = deg(
a
) = 0,
c
<
a
; deg(
b
) = 1
Auxiliary generators:
aab
=
c
Certificate
: derivations of all rewriting rules from the defining relations.
#
Rule
Proof
1.
c
2
ba
⇒
c
[4]
2.
cab
⇒
c
2
bc
[5]
3.
a
2
b
⇒
c
[2]
# ab:aabaabba=aab ca/b aab=c magic:0 ccba=c cab=ccbc aab=c