Definition:Left


 * The direction left


 * In the context of Algebra:
 * Left Hand Side


 * In the context of Relation Theory:
 * Left-Total Relation
 * Left Quasi-Reflexive Relation
 * Left-Euclidean Relation
 * Left Normal Element of Relation


 * In the context of Mapping Theory:
 * Left Cancellable Mapping
 * Left Inverse Mapping


 * In the context of Order Theory:
 * Left Half-Open Interval


 * In the context of Analysis:
 * Left-Hand Derivative


 * In the context of Real Analysis:
 * Limit from Left
 * Left Difference Quotient
 * Left-Continuous at Point
 * Real Left-Hand Derivative
 * Left Half-Open Real Interval
 * Left Half-Open Bounded Real Interval
 * Closed Real Interval Bounded on the Left, also known as a Closed Unbounded Above Real Interval
 * Open Real Interval Bounded on the Left, also known as an Open Unbounded Above Real Interval


 * In the context of Abstract Algebra:
 * Left Zero
 * Left Identity
 * Left Operation
 * Left Cancellable Element
 * Left Cancellable Operation
 * Left Distributive Operation
 * Left Inverse Element
 * Left Quasigroup
 * Left Regular Representation
 * Left-Hand Product or Left Product
 * Left Naturally Totally Ordered Semigroup


 * In the context of Group Theory
 * Left Group Axioms
 * Left Coset
 * Left Coset Space
 * Left Transversal
 * Left Group Action
 * Left Subset Product Action
 * Left Congruence Modulo Subgroup


 * In the context of Ring Theory
 * Left Zero Divisor
 * Left Linear Ring Action


 * In the context of Ideal Theory:
 * Left Ideal of Ring
 * Maximal Left Ideal of Ring


 * In the context of Linear Algebra:
 * Left Module
 * Left Module Axioms
 * Left Null Space


 * In the context of Recreational Mathematics:
 * Left-Truncatable Prime


 * In the context of Category Theory:
 * Category of Left Modules


 * In the context of Analytic Geometry:
 * Left-Handed Cartesian Plane
 * Left-Handed Cartesian 3-Space
 * Left-Handed Triad


 * Left Cancellable
 * Left Cancellable Element
 * Left Cancellable Operation


 * Left Inverse
 * Left Inverse Element
 * Left Inverse Element


 * Left Ideal
 * Left Ideal of Ring


 * Left Half-Open Interval
 * Left Half-Open Real Interval
 * Closed Real Interval Bounded on the Left, also known as a Closed Unbounded Above Real Interval
 * Open Real Interval Bounded on the Left, also known as an Open Unbounded Above Real Interval

Also see

 * Definition:Right