Frobenius-König Theorem
The Permanent of an 
Matrix with all entries either 0 or 1 is 0 Iff the Matrixcontains an 
submatrix of 0s with 
. This result follows from the König-Egeváry Theorem.
- Root (Radical)
- Root Test
- Root (Tree)
- Rosatti's Theorem
- Rose
- Rosenbrock Methods
- Rotation
- Rotation Formula
- Rotation Group
- Rotation Matrix
- Rotation Number
- Rotation Operator
- Roth's Removal Rule
- Roth's Theorem
- Rotkiewicz Theorem
- Rotoinversion
- Rotor
- Rotunda
- Rouché's Theorem
- Roulette
- Round
- Rounding
- Routh-Hurwitz Theorem
- Routh's Theorem
- RSA Encryption