Group-like algebraic structures

magma
β β β
div id ass
β
quasigroup unital_magma semigroup
β +ass β β +inv
id
β β
loop unverse_semigroup monoid
ass id inv
group
Magma
Semigroup
Monoid
Group
Abelian group
Rack and quandle
Quasigroup
loop
Lie group
Group theory
Axioms of group-like algebras
closure, totality
associativity, associative binary operation
identity, unique neutral or identity element
invertability, inverse elements
divisibility
commutativity
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