Bicollared
A Subset 
is said to be bicollared in 
if there exists an embedding 
such that 
when 
. The Map 
or its image is then said to be the bicollar.
References
Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, pp. 34-35, 1976.
- Conjugate Element
- Conjugate Gradient Method
- Conjugate Points
- Conjugate Subgroup
- Conjugation
- Conjunction
- Connected Graph
- Connected Set
- Connected Space
- Connected Sum
- Connected Sum Decomposition
- Connection
- Connection Coefficient
- Connectivity
- Connes Function
- Conocuneus of Wallis
- Conoid
- Consecutive Number Sequences
- Conservation of Number Principle
- Conservative Field
- Consistency
- Consistency Strength
- Constant
- Constant Function
- Constant Precession Curve