Definition:Commutative B-Algebra

Definition
Let $\struct {X, \circ}$ be a $B$-algebra.

Then $\struct {X, \circ}$ is said to be $0$-commutative (or just commutative) :


 * $\forall x, y \in X: x \circ \paren {0 \circ y} = y \circ \paren {0 \circ x}$

Note
Note the independent properties of $\struct {X, \circ}$ being $0$-commutative and $\circ$ being commutative.

To demonstrate consider the $B$-algebra $\struct {\R, -}$ where $-$ denotes real subtraction.

$\struct {\R, -}$ is 0-commutative but $-$ is not commutative.