ordered pairs
Sequenced two-element groups
An ordered pair is a set of two elements where sequence matters—the pair (a, b) differs from (b, a).
In coordinate geometry, ordered pairs specify points on a plane: The ordered pair (3, 5) marks a location three units right and five units up.
The concept extends to any pairing where first and second positions carry distinct meaning.
Ordered finite sequence
- coordinatesLocation-specifying number pairs
- CartesianOf x-y coordinate geometry
- graphingPlotting data visually
- plottingDevising a secret plan
quadrants · origin · functions · variables · set theory · relation · domain · range
Two linked together
- duoTwo working together
- partnershipShared business arrangement
- bondBinding tie or connection
- matchingIdentical in appearance
coupling · linking · dyad · twosome · tandem · binary · correspondence · association
Sequential forward movement
- seriesOrdered set of related items
- arrayOrdered collection or display
- successionFollowing in order
- arrangementOrdered configuration or agreement
ranking · enumeration · position · index · first · second · precedence · priority
Unequal distribution of resources
- precedenceSuperior rank or importance
- rankingOrdered position assignment
- dominanceSuperior influence over others
- preferenceFavored choice among alternatives
asymmetric · antisymmetric · comparable · incomparable · strict · non-strict · trichotomy
Quantity with direction
- orientationPosition relative to surroundings
- bearingPosture or orientation
- headingDirectional course traveled
- trajectoryPath of moving object
tuple
Ordered finite sequence
- coordinatesLocation-specifying number pairs
- CartesianOf x-y coordinate geometry
- graphingPlotting data visually
plotting · quadrants · origin · functions · variables · set theory · relation · domain · range · mapping
couple
Two linked together
- duoTwo working together
- partnershipShared business arrangement
- bondBinding tie or connection
matching · coupling · linking · dyad · twosome · tandem · binary · correspondence · association · counterpart
progression
Sequential forward movement
- seriesOrdered set of related items
- arrayOrdered collection or display
- successionFollowing in order
arrangement · ranking · enumeration · position · index · first · second · precedence · priority · sorted
inequality
Unequal distribution of resources
- precedenceSuperior rank or importance
- rankingOrdered position assignment
- dominanceSuperior influence over others
preference · asymmetric · antisymmetric · comparable · incomparable · strict · non-strict · trichotomy
vector
Quantity with direction
- orientationPosition relative to surroundings
- bearingPosture or orientation
- headingDirectional course traveled
- coordinate geometrycoordinate, coordinates, coordinate plane, coordinate grid, Cartesian plane
- combinatoricspermutation, combinations, combination, counting, arrangements
- set theorysets, set, subset, superset, empty set
- algebravariables, equations, equation, polynomials, algebraic equations
- number setsnatural numbers, integers, rational numbers, rationals, whole numbers