code
stringlengths
3
6.57k
Program (LP)
integer (default: ``0``)
designs.transversal_design(2,2,resolvable=True)
TD.is_resolvable()
designs.AffineGeometryDesign(3,1,GF(2)
AG.is_resolvable()
TD.is_resolvable(True)
AG.is_resolvable(True)
designs.balanced_incomplete_block_design(7,3)
Fano.is_resolvable()
Fano.is_resolvable(True)
AG.is_resolvable(certificate=True)
AG.is_resolvable(certificate=True)
set(itervalues(self.degrees()
len(degrees)
degrees.pop()
MixedIntegerLinearProgram(solver=solver)
p.new_variable(binary=True)
list(range(self.num_points()
enumerate(self._blocks)
append(i)
range(n_classes)
p.add_constraint(p.sum(b[t,i] for i in dual[x])
range(len(self._blocks)
p.add_constraint(p.sum(b[t,i] for t in range(n_classes)
p.solve(log=verbose)
range(n_classes)
for (t,i)
six.iteritems(p.get_values(b)
append(self._blocks[i])
sorted(id(c)
sorted(id(b)
list(range(self.num_points()
enumerate(self._classes)
sorted(sum(c,[])
format(i)
return (False, [])
return (True, classes)
coloring(self, k=None, solver=None, verbose=0)
a (weak)
Program (LP)
integer (default: ``0``)
len(designs.steiner_triple_system(7)
coloring()
designs.steiner_triple_system(7)
coloring()
graphs.PetersenGraph()
IncidenceStructure(g.edges(labels=False)
len(g.coloring()
len(H.coloring()
range(self.num_points()
self.coloring(k)
self.num_points()
ValueError("Only empty hypergraphs are 0-chromatic")
any(len(x)
any(x for x in self._blocks)
self.ground_set()
MixedIntegerLinearProgram(solver=solver)
p.new_variable(binary=True)
range(self.num_points()
p.add_constraint(p.sum(b[x,i] for i in range(k)
range(k)
p.add_constraint(p.sum(b[x,i] for x in s)
len(s)
p.solve(log=verbose)
ValueError("This hypergraph is not {}-colorable".format(k)
range(k)
for (x,i)
six.iteritems(p.get_values(b)
append(self._points[x])
edge_coloring(self)
Hypergraph([{1,2,3},{2,3,4},{3,4,5},{4,5,6}])
H.edge_coloring()
Set(map(Set,sum(C,[])
Set(map(Set,H.blocks()
self.blocks()
frozenset(_)
Graph([list(range(self.num_blocks()
len(blocks_sets[x]&blocks_sets[y])
g.coloring(algorithm="MILP")
_spring_layout(self)
Hypergraph([{1,2,3},{2,3,4},{3,4,5},{4,5,6}])
H._spring_layout()
all(v in L for v in H.ground_set()
all(v in L for v in map(Set,H.blocks()
Graph()
map(Set, self.blocks()
g.add_edge((0, s)
g.plot(iterations = 50000,save_pos=True)
round(x, 3)
round(y, 3)
g.get_pos()
items()
_latex_(self)
Hypergraph([{1,2,3},{2,3,4},{3,4,5},{4,5,6}])
view(H)
graphs.Grid2dGraph(5,5)
graphs.CycleGraph(4)
Set(map(Set,list(g.subgraph_search_iterator(C4)
Hypergraph(sets)