TY  - JOUR
AU  - Hilden, Hugh Michael
AU  - Montesinos Amilibia, José María
AU  - Tejada Jiménez, Débora María
AU  - Toro Villegas, Margarita María
PY  - 2004
SN  - 0370-3908
UR  - https://hdl.handle.net/20.500.14352/50755
T2  - Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales.
AB  - A butterfly is a 3-ball B with an even number of polygonal faces, named wings, pair-wise identified. Each identification between two wings is required to be a topological reflexion whose axis is an edge shared by the wings. The set of axes of the...
LA  - spa
M2  - 71
PB  - Academia Colombiana de Ciencias Exactas, Físicas y Naturales.
KW  - Knots
KW  - Fundamental group
KW  - 3-manifolds
KW  - Branched coverings.
TI  - Butterflies and 3-manifolds. (Spanish: Mariposas y 3-variedades)
TY  - journal article
VL  - 28
ER  -