Bonne Projection
A Map Projection which resembles the shape of a heart. Let 
be the standard parallel and 
thecentral meridian. Then
 |  |  | (1) |
 | |  | (2) |
where
 | |  | (3) |
 | |  | (4) |
The inverse Formulas are
 | |  | (5) |
 | |  | (6) |
where
 | (7) |
References
Snyder, J. P. Map Projections--A Working Manual. U. S. Geological Survey Professional Paper 1395. Washington, DC: U. S. Government Printing Office, pp. 138-140, 1987.
- Abel Transform
- Abhyankar's Conjecture
- Ablowitz-Ramani-Segur Conjecture
- Abscissa
- Absolute Convergence
- Absolute Deviation
- Absolute Error
- Absolute Geometry
- Absolutely Continuous
- Absolute Pseudoprime
- Absolute Square
- Absolute Value
- Absorption Law
- Abstraction Operator
- Abundance
- Abundant Number
- Acceleration
- Accidental Cancellation
- Accumulation Point
- Achilles and the Tortoise Paradox
- Ackermann Function
- Ackermann Number
- Acnode
- Acoptic Polyhedron
- Action