Gauss's Lemma
Let the multiples 
, 
, ..., 
of an Integer such that 
be taken. If there are an Evennumber 
of least Positive Residues mod 
of these numbers 
, then is aQuadratic Residue of . If is Odd, is a Quadratic Nonresidue. Gauss'slemma can therefore be stated as 
, where 
is the Legendre Symbol. It was proved byGauß 
as a step along the way to the Quadratic Reciprocity Theorem.
- Transcendental Curve
- Transcendental Equation
- Transcendental Function
- Transcendental Number
- Transcritical Bifurcation
- Transfer Function
- Convergent Sequence
- Convergent Series
- Conversion Period
- Convex
- Convex Function
- Convex Hull
- Convex Optimization Theory
- Convex Polygon
- Convex Polyhedron
- Convolution
- Convolution Theorem
- Conway-Alexander Polynomial
- Conway Groups
- Conway Notation
- Conway Polyhedron Notation
- Conway Polynomial
- Conway Puzzle
- Conway's Constant
- Conway Sequence