Quadruple Point
A point where a curve intersects itself along four arcs. The above plot shows the quadruple point at the Originof the Quadrifolium 
.
References
Walker, R. J. Algebraic Curves. New York: Springer-Verlag, pp. 57-58, 1978.
- Green's Identities
- Green Space
- Green's Theorem
- Gregory Number
- Gregory's Formula
- Grelling's Paradox
- Grenz-Formel
- Griffiths Points
- Griffiths' Theorem
- Grimm's Conjecture
- Grinberg Formula
- Groemer Packing
- Groemer Theorem
- Gronwall's Theorem
- Gross
- Grossman's Constant
- Grothendieck's Constant
- Grothendieck's Theorem
- Ground Set
- Group
- Group Convolution
- Groupoid
- Group Orthogonality Theorem
- Group Ring
- Group Theory