Approximately Equal

If two quantities and are approximately equal, this is written .

• Reduction Theorem
• Redundancy
• Reeb Foliation
• Reef Knot
• Re-Entrant Circuit
• Refinement
• Reflection
• Reflection Property
• Reflection Relation
• Reflexible
• Reflexible Map
• Reflexive Closure
• Reflexive Graph
• Reflexive Reduction
• Reflexive Relation
• Reflexivity
• Region
• Regression
• Regression Coefficient
• Regula Falsi
• Regular Function
• Regular Graph
• Regular Isotopy
• Regular Isotopy Invariant
• Regularity Theorem