Anticlastic

When the Gaussian Curvature is everywhere Negative, a Surface is called anticlastic and issaddle-shaped. A Surface on which is everywhere Positive is called Synclastic. A point at which theGaussian Curvature is Negative is called a Hyperbolic Point.

• Robertson Condition
• Robertson Conjecture
• Robertson-Seymour Theorem
• Robin Boundary Conditions
• Robin's Constant
• Robinson Projection
• Robust Estimation
• Rodrigues Formula
• Rodrigues's Curvature Formula
• Rogers-Ramanujan Continued Fraction
• Rogers-Ramanujan Identities
• Rolle's Theorem
• Roman Coefficient
• Roman Factorial
• Roman Numeral
• Roman Surface
• Roman Symbol
• Romberg Integration
• Rook Number
• Rook Reciprocity Theorem
• Rooks Problem
• Room Square
• Root
• Root Dragging Theorem
• Rooted Tree