TY  - JOUR
AU  - Montesinos Amilibia, José María
PY  - 1989
SN  - 1123-2536
UR  - https://hdl.handle.net/20.500.14352/58611
T2  - Note di Matematica
AB  - Let M be a closed orientable 3-manifold. The rank of M, rk(M), is the minimum number of elements that can generate π1(M). Clearly rk(M)≤Hg(M), where Hg(M) is the Heegaard genus of M. F. Waldhausen conjectured that equality holds here, but then....
LA  - spa
M2  - 101
PB  - Università del Salento
KW  - big genus
KW  - rank
KW  - Heegaard genus
KW  - closed orientable 3-manifold
KW  - generators and relations
KW  - presentation
KW  - Nielsen genus
TI  - Discrepancy between the rank and the Heegaard genus of a 3-manifold. (Spanish: La discrepancia entre el rango y el genero de Heegaard de una 3-variedad)
TY  - journal article
VL  - 9
ER  -