#21051 ⟨a, b | ba=ab, aaaa=abb⟩

Properties

Presentation has sum-of-sides 11
Infinite non-cancellative commutative monoid
Commutative Gröbner basis: ⟨a, b | ab²=a⁴⟩
Not cancellative, because multiplication by ab is not injective:
- a³ ≠ b²
- ab ⋅ a³ = a⁴b
- ab ⋅ b² = a⁴b
Grothendieck group is isomorphic to ℤ
Group of units is isomorphic to ℤ₁
3 Archimedian components:
- 1, a, b

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

# ab:ba=ab,aaaa=abb ab
ba=ab
aaaa=abb

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

1 total

Σ	#	Presentation	Mapping
11	21052	⟨a, b \| ba=ab, aaaa=bab⟩	φ(a) = a, φ(b) = b

Up:	Monoids with two generators and two relations
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