Brahmagupta's Problem
Solve the Pell Equation
in Integers. The smallest solution is
, 
.See also Diophantine Equation, Pell Equation- Inverse Scattering Method
- Inverse Secant
- Inverse Semigroup
- Inverse Sine
- Inverse Tangent
- Inverse Trigonometric Functions
- Inversion
- Inversion Center
- Inversion Circle
- Inversion Operation
- Inversion Radius
- Inversive Distance
- Inversive Geometry
- Inverted Funnel
- Inverted Snub Dodecadodecahedron
- Invertible Knot
- Involuntary
- Involute
- Involution (Group)
- Involution (Line)
- Involution (Operator)
- Involution (Set)
- Involution (Transformation)
- Irradiation Illusion
- Irrationality Measure