Constant Problem
Given an expression involving known constants, integration in finite terms, computation of limits, etc., determine if theexpression is equal to Zero. The constant problem is a very difficult unsolved problem in TranscendentalNumber theory. However, it is known that the problem is Undecidable if the expression involves oscillatoryfunctions such as Sine. However, the Ferguson-Forcade Algorithm is a practical algorithm for determining ifthere exist integers 
for given real numbers 
such that
or else establish bounds within which no relation can exist (Bailey 1988).See also Ferguson-Forcade Algorithm, Integer Relation, Schanuel's Conjecture
References
Bailey, D. H. ``Numerical Results on the Transcendence of Constants Involving Sackell, J. ``Zero-Equivalence in Function Fields Defined by Algebraic Differential Equations.'' Trans. Amer. Math. Soc. 336, 151-171, 1993.
, 
, and Euler's Constant.'' Math. Comput. 50, 275-281, 1988.
- Pearson's Function
- Pearson Skewness
- Pearson's Skewness Coefficients
- Pearson System
- Pearson Type III Distribution
- Peaucellier Cell
- Peaucellier Inversor
- Peaucellier's Linkage
- Pedal
- Pedal Circle
- Pedal Coordinates
- Pedal Curve
- Pedal Line
- Pedal Point
- Pedal Triangle
- Peg Knot
- Peg Solitaire
- Peg Top
- Peirce's Theorem
- p-Element
- Pell Equation
- Pell-Lucas Number
- Pell-Lucas Polynomial
- Pell Number
- Pell Polynomial