def getDDStructure(self):
"""Returns the type DD structure corresponding to this cobordism."""
all_idems = self._getIdems()
all_chords = self._getChords()
all_chords = [self._StrandsFromChords(chord1, chord2)
for chord1, chord2 in all_chords]
alg1 = self.start_pmc.getAlgebra(mult_one = True)
alg2 = self.end_pmc.getAlgebra(mult_one = True)
ddstr = DDStrFromChords(alg1, alg2, all_idems, all_chords)
assert ddstr.testDelta()
return ddstr
def getDDStructure(self):
"""Returns the type DD structure corresponding to this dehn twist."""
all_idems = self._getIdems()
all_chords = []
for chord_type in self._getChordsList():
all_chords.extend(chord_type())
all_chords = [self._StrandsFromChords(chord1, chord2)
for chord1, chord2 in all_chords]
alg1 = self.start_pmc.getAlgebra(mult_one = True)
alg2 = alg1
ddstr = DDStrFromChords(alg1, alg2, all_idems, all_chords)
assert ddstr.testDelta()
return ddstr
def getDDStructure(self):
"""Returns the type DD structure corresponding to this dehn twist."""
self.all_idems = self._getIdems()
self.all_chords = []
for chord_type in self._PChords:
chord_type(self)
if self.orientation == NEG:
self.all_chords = [(r.opp(), l.opp()) for l, r in self.all_chords]
# mult_one = False case is more complicated
alg1 = self.start_pmc.getAlgebra(mult_one = True)
alg2 = alg1
ddstr = DDStrFromChords(alg1, alg2, self.all_idems, self.all_chords)
assert ddstr.testDelta()
return ddstr
def getDDStructure(self, abs_gr_info = None):
"""Returns the type DD structure corresponding to this arcslide."""
self.all_idems = self.getIdems()
self.all_chords = []
if self.slide_type == UNDER_SLIDE:
for chord_type in self._UChords:
chord_type(self)
else:
for chord_type in self._OChords:
chord_type(self)
alg1 = self.start_pmc.getAlgebra()
alg2 = self.end_pmc.opp().getAlgebra()
ddstr = DDStrFromChords(alg1, alg2, self.all_idems, self.all_chords)
if abs_gr_info is not None:
self._getAbsGrading(ddstr, abs_gr_info)
else:
for gen in ddstr.getGenerators():
base_gen = gen
break
ddstr.registerHDiagram(getArcslideDiagram(self), base_gen)
return ddstr
