192 reputation
113
bio website juanmarqz.wordpress.com
location Guadalajara, Jal.
age 44
visits member for 4 years, 10 months
seen 2 days ago

basic mathematician

CUCEI, Universidad de Guadalajara

CIMAT A.C., Valenciana, Guanajuato

México


Jul
22
accepted Branched coverings over orbifolds with reflector lines
Feb
16
comment Seifert fiberable manifolds with several Seifert fiberings
did you tried to see their fundamental groups?
Jan
22
awarded  Enthusiast
Jan
18
comment Branched coverings over orbifolds with reflector lines
is it unique $Q$ among the orbifolds that contain a single reflector circle, but $\partial Q$ connected?
Jan
17
comment Branched coverings over orbifolds with reflector lines
is your $Q=(S^1\times [-1,1])/\sim_{\rm ref}$ the möbius strip?.. is $\partial Q$ a circle right??
Jan
17
comment Branched coverings over orbifolds with reflector lines
ok thanks again @Neil, I'm going re-check
Jan
15
comment Branched coverings over orbifolds with reflector lines
For an annulus where only one of the two boundary circles is a reflector one is the same to $M\ddot{o}/\sim$. Here we have $M\ddot{o}/\sim$ where $(p,t)\sim(p,-t)$ for $0\le t\le 1$ over the Möbius strip $M\ddot{o}$... So, is the same fate?
Jan
14
comment Branched coverings over orbifolds with reflector lines
where reflector circle is taken à la Scott, in "Geometries of 3-manifolds"
Jan
14
comment Branched coverings over orbifolds with reflector lines
what about in the presence of reflector arcs and reflector circles? and say: $N=0$ and $M=0$
Jan
13
comment orbifold covering
what if instead of cones, are there reflector circles?
Jan
13
comment Branched coverings over orbifolds with reflector lines
for "street babbling" I was referring to the style there on the Greg's link... but now i understand over this two word the meaning that your culture carries... excuse my clumsy english and for being to rude
Jan
13
comment Branched coverings over orbifolds with reflector lines
there, I found street babbling difficult to follow and retain
Jan
12
revised Branched coverings over orbifolds with reflector lines
edited tags
Jan
11
comment Counterexamples in universal algebra
@Jöel: $({\Bbb{Z}}\times {\Bbb{Z}})*{\Bbb{Z}}$ is free product, but isn't a free group.
Dec
25
answered When are fiber bundles reversible?
Jun
26
accepted Two solid N_3 glued by its boundary
Jun
25
awarded  Benefactor
Jun
25
awarded  Citizen Patrol
Jun
25
awarded  Promoter
Oct
12
comment What do you call the product of a circle and an annulus?
@Ryan: $M\ddot{o}\times S^1$ is the non-orientable twisted $I$-bundle over the torus.