Action

Let denote the Group of all invertible Maps and let be any Group.A Homomorphism is called an action of on . Therefore, satisfies

1. For each , is a Map ,

2. ,

3. , where is the group identity in ,

4. .

• Christoffel Symbol of the First Kind
• Christoffel Symbol of the Second Kind
• Chromatic Number
• Chromatic Polynomial
• Chu Identity
• Church's Theorem
• Church's Thesis
• Church-Turing Thesis
• Chu Space
• Chu-Vandermonde Identity
• Chvátal's Art Gallery Theorem
• Chvátal's Theorem
• ci
• Ci
• Cigarettes
• Cin
• Circle
• Circle Caustic
• Circle-Circle Intersection
• Circle Cutting
• Circle Evolute
• Circle Inscribing
• Circle Involute
• Circle Involute Pedal Curve
• Circle Lattice Points