Ln
The Logarithm to Base e, also called the Natural Logarithm,is denoted 
, i.e.,
See also Base (Logarithm), e, Lg, Logarithm, Napierian Logarithm, Natural Logarithm
- Carotid-Kundalini Function
- Carry
- Carrying Capacity
- Cartan Matrix
- Cartan Relation
- Cartan Subgroup
- Cartan Torsion Coefficient
- Cartesian Coordinates
- Cartesian Ovals
- Cartesian Product
- Cartesian Trident
- Cartography
- Cascade
- Casey's Theorem
- Casimir Operator
- Cassini Ellipses
- Cassini Ovals
- Cassini Projection
- Cassini's Identity
- Cassini Surface
- Castillon's Problem
- Casting Out Nines
- Catacaustic
- Catalan Integrals
- Catalan Number