Chu-Vandermonde Identity
where
is a Binomial Coefficient and 
is the Pochhammer Symbol.A special case gives the identity
See also Binomial Theorem, Umbral Calculus
References
Petkovsek, M.; Wilf, H. S.; and Zeilberger, D. A=B. Wellesley, MA: A. K. Peters, pp. 130 and 181-182, 1996.
- Ratio
- Ratio Distribution
- Rational Approximation
- Rational Canonical Form
- Rational Cuboid
- Rational Distances
- Rational Domain
- Rational Double Point
- Rational Function
- Rational Integer
- Rational Number
- Rational Point
- Rational Quadrilateral
- Rational Triangle
- Ratio Test
- RATS Sequence
- Ray
- Rayleigh Differential Equation
- Rayleigh Distribution
- Rayleigh-Ritz Variational Technique
- Rayleigh's Formulas
- Rayleigh's Theorem
- Real Analysis
- Real Axis
- Real Function