Ejemplo n.º 1
0
def kalmanson_fan(n):
    fn = "kalmanson_fan_%i" % n
    try:
        return db(fn)
    except IOError:
        f = Fan(Set(kalmanson_cones(n)))
        f.db(fn)
        return f
Ejemplo n.º 2
0
 def __call__(self, *args):
     fn = ("%s" + ("_%i" * len(args))) % ((self.f.__name__, ) + args)
     try:
         return db(fn)
     except IOError:
         res = self.f(*args)
         db_save(res, fn)
         return res
Ejemplo n.º 3
0
def kalmanson_cones(n):
    desc = "kalmanson_cones_%i" % n
    try:
        return db(desc)
    except IOError:
        R = rays(n)
        ray_sets = Set([Set([permute_matrix(g,M) for M in R]) for g in SymmetricGroup(n)])
        p_iter = sage.parallel.use_fork.p_iter_fork(sage.parallel.ncpus.ncpus() * 2,30)
        P = parallel(p_iter=p_iter)
        cones = [ret for ((poly,kwd),ret) in P(make_cone)(ray_sets.list())]
        db_save(Set(cones), desc)
        return cones