Polymorph
An Integer which is expressible in more than one way in the form 
or 
where 
is RelativelyPrime to 
. If the Integer is expressible in only one way, it is called a Monomorph.
- Equivalence Relation
- Equivalent
- Equivalent Matrix
- Eratosthenes Sieve
- Erdös-Anning Theorem
- Erdös-Kac Theorem
- Erdös-Mordell Theorem
- Erdös Number
- Erdös Reciprocal Sum Constants
- Erdös-Selfridge Function
- Erdös Squarefree Conjecture
- Erdös-Szekeres Theorem
- Erf
- Erfc
- Erfi
- Ergodic Measure
- Ergodic Theory
- Ergodic Transformation
- Erlanger Program
- Ermakoff's Test
- Error
- Error-Correcting Code
- Error Curve
- Error Function
- Error Function Distribution