def _display_im(self, y, prec):
if abs(y) < 10**(-prec):
return ""
res = display_float(y, prec)
if res == '1':
res = ''
return r"%s<em>i</em>"%(res)
def embedding(self, m, n=None, prec=6, format='embed'):
"""
Return the value of the ``m``th embedding on a specified input.
Should only be used when all of the entries in this column are either real
or imaginary.
INPUT:
- ``m`` -- an integer, specifying which embedding to use.
- ``n`` -- a positive integer, specifying which a_n. If None, returns the image of
the generator of the field (i.e. the root corresponding to this embedding).
- ``prec`` -- the precision to display floating point values
- ``format`` -- either ``embed`` or ``analytic_embed``. In the second case, divide by n^((k-1)/2).
"""
if n is None:
x = self.cc_data[m].get('embedding_root_real', None)
y = self.cc_data[m].get('embedding_root_imag', None)
if x is None or y is None:
return '?' # we should never see this if we have an exact qexp
else:
x, y = self.cc_data[m]['an'][n]
if format == 'analytic_embed':
x *= self.analytic_shift[n]
y *= self.analytic_shift[n]
if self.cc_data[m]['real']:
return display_float(x, prec)
else:
return display_complex(x, y, prec)
def _display_re(self, x, prec, method='round', extra_truncation_digits=3):
res = display_float(x, prec,
method=method,
extra_truncation_digits=extra_truncation_digits,
try_halfinteger=False)
if res == "0":
return ""
else:
return res.replace('-','−')
def _display_im(self, y, prec, method='round', extra_truncation_digits=3):
res = display_float(y, prec,
method=method,
extra_truncation_digits=extra_truncation_digits,
try_halfinteger=False)
if res == "0":
return ""
elif res == "1":
res = ""
return r"%s<em>i</em>"%(res)
def satake_angle(self, m, p, i, prec=6):
theta = self._get_theta(m, p, i)
s = display_float(2*theta, prec)
if s == "1":
s = r'\pi'
elif s== "-1":
s = r'-\pi'
elif s != "0":
s += r'\pi'
return r'\(%s\)'%s
def frob_angles(self):
ans = ""
eps = 0.00000001
for angle in self.angles:
angstr = display_float(angle, 12, 'round')
if ans != "":
ans += ", "
if abs(angle) > eps and abs(angle - 1) > eps:
angle = r"$\pm" + angstr + "$"
else:
angle = "$" + angstr + "$"
ans += angle
return ans
def satake_angle(self, m, p, i, prec=6):
if not self.character_values[p]:
# bad prime
return ''
theta = self._get_theta(m, p, i)
s = display_float(2*theta, prec, method='round')
if s == "1":
s = r'\pi'
elif s== "-1":
s = r'-\pi'
elif s != "0":
s += r'\pi'
return r'\(%s\)'%s
def _display_re(self, x, prec):
if abs(x) < 10**(-prec):
return ""
return r"%s"%(display_float(x, prec).replace('-','−'))
def general_webpagedata(self):
info = {}
try:
info['support'] = self.support
except AttributeError:
info['support'] = ''
info['Ltype'] = self.Ltype()
try:
info['label'] = self.label
except AttributeError:
info['label'] = ""
try:
info['credit'] = self.credit
except AttributeError:
info['credit'] = ""
info['degree'] = int(self.degree)
info['conductor'] = self.level
if not is_prime(int(self.level)) and int(self.level) != 1:
if self.level >= 10**8:
info['conductor'] = latex(self.level_factored)
else:
info['conductor_factored'] = latex(self.level_factored)
if self.analytic_conductor:
info['analytic_conductor'] = display_float(
self.analytic_conductor,
6,
extra_truncation_digits=40,
latex=True)
info['root_analytic_conductor'] = display_float(
self.root_analytic_conductor,
6,
extra_truncation_digits=40,
latex=True)
else:
info['analytic_conductor'] = self.analytic_conductor
info['root_analytic_conductor'] = self.root_analytic_conductor
if self.rational is not None:
info['rational'] = 'yes' if self.rational else 'no'
info['sign'] = "$" + styleTheSign(self.sign) + "$"
info['algebraic'] = self.algebraic
info['arithmetic'] = 'yes' if self.arithmetic else 'no'
if self.selfdual:
info['selfdual'] = 'yes'
else:
info['selfdual'] = 'no'
if self.primitive:
info['primitive'] = 'yes'
else:
info['primitive'] = 'no'
info['dirichlet'] = lfuncDShtml(self, "analytic")
# Hack, fix this more general?
info['dirichlet'] = info['dirichlet'].replace('*I', '<em>i</em>')
info['eulerproduct'] = lfuncEPtex(self, "abstract")
info['functionalequation'] = lfuncFEtex(self, "analytic")
info['functionalequationSelberg'] = lfuncFEtex(self, "selberg")
if hasattr(self, 'positive_zeros'):
info['positive_zeros'] = self.positive_zeros
info['negative_zeros'] = self.negative_zeros
if hasattr(self, 'plot'):
info['plot'] = self.plot
if hasattr(self, 'factorization'):
info['factorization'] = self.factorization
if self.fromDB and self.algebraic:
info['dirichlet_arithmetic'] = lfuncDShtml(self, "arithmetic")
info['eulerproduct_arithmetic'] = lfuncEPtex(self, "arithmetic")
info['functionalequation_arithmetic'] = lfuncFEtex(
self, "arithmetic")
if self.motivic_weight % 2 == 0:
arith_center = "\\frac{" + str(1 +
self.motivic_weight) + "}{2}"
else:
arith_center = str(ZZ(1) / 2 + self.motivic_weight / 2)
svt_crit = specialValueTriple(self, 0.5, '\\frac12', arith_center)
info['sv_critical'] = svt_crit[0] + "\\ =\\ " + svt_crit[2]
info['sv_critical_analytic'] = [
svt_crit[0],
scientific_notation_helper(svt_crit[2])
]
info['sv_critical_arithmetic'] = [
svt_crit[1],
scientific_notation_helper(svt_crit[2])
]
if self.motivic_weight % 2 == 1:
arith_edge = "\\frac{" + str(2 + self.motivic_weight) + "}{2}"
else:
arith_edge = str(ZZ(1) + self.motivic_weight / 2)
svt_edge = specialValueTriple(self, 1, '1', arith_edge)
info['sv_edge'] = svt_edge[0] + "\\ =\\ " + svt_edge[2]
info['sv_edge_analytic'] = [
svt_edge[0],
scientific_notation_helper(svt_edge[2])
]
info['sv_edge_arithmetic'] = [
svt_edge[1],
scientific_notation_helper(svt_edge[2])
]
chilatex = r"$\chi_{" + str(self.charactermodulus) + "} (" + str(
self.characternumber) + r", \cdot )$"
info['chi'] = ''
if self.charactermodulus != self.level:
info['chi'] += "induced by "
info['chi'] += '<a href="' + url_for(
'characters.render_Dirichletwebpage',
modulus=self.charactermodulus,
number=self.characternumber)
info['chi'] += '">' + chilatex + '</a>'
info['st_group'] = self.st_group
info['st_link'] = self.st_link
info['rank'] = self.order_of_vanishing
info['motivic_weight'] = r'\(%d\)' % self.motivic_weight
elif self.Ltype() == "riemann":
info['sv_edge'] = r"\[\zeta(1) \approx $\infty$\]"
info['sv_critical'] = r"\[\zeta(1/2) \approx -1.460354508\]"
elif self.Ltype() != "artin" or (self.Ltype() == "artin"
and self.sign != 0):
try:
info['sv_edge'] = specialValueString(self, 1, '1')
info['sv_critical'] = specialValueString(self, 0.5, '1/2')
except Exception:
info['sv_critical'] = "L(1/2): not computed"
info['sv_edge'] = "L(1): not computed"
return info
