def render_field_webpage(args): data = None info = {} bread = bread_prefix() # This function should not be called unless label is set. label = clean_input(args['label']) nf = WebNumberField(label) data = {} if nf.is_null(): if re.match(r'^\d+\.\d+\.\d+\.\d+$', label): flash_error("Number field %s was not found in the database.", label) else: flash_error("%s is not a valid label for a number field.", label) return redirect(url_for(".number_field_render_webpage")) info['wnf'] = nf data['degree'] = nf.degree() data['class_number'] = nf.class_number_latex() ram_primes = nf.ramified_primes() t = nf.galois_t() n = nf.degree() data['is_galois'] = nf.is_galois() data['autstring'] = r'\Gal' if data['is_galois'] else r'\Aut' data['is_abelian'] = nf.is_abelian() if nf.is_abelian(): conductor = nf.conductor() data['conductor'] = conductor dirichlet_chars = nf.dirichlet_group() if dirichlet_chars: data['dirichlet_group'] = [ r'<a href = "%s">$\chi_{%s}(%s,·)$</a>' % (url_for('characters.render_Dirichletwebpage', modulus=data['conductor'], number=j), data['conductor'], j) for j in dirichlet_chars ] if len(data['dirichlet_group']) == 1: data[ 'dirichlet_group'] = r'<span style="white-space:nowrap">$\lbrace$' + data[ 'dirichlet_group'][0] + r'$\rbrace$</span>' else: data['dirichlet_group'] = r'$\lbrace$' + ', '.join( data['dirichlet_group'] [:-1]) + '<span style="white-space:nowrap">' + data[ 'dirichlet_group'][-1] + r'$\rbrace$</span>' if data['conductor'].is_prime() or data['conductor'] == 1: data['conductor'] = r"\(%s\)" % str(data['conductor']) else: factored_conductor = factor_base_factor(data['conductor'], ram_primes) factored_conductor = factor_base_factorization_latex( factored_conductor) data['conductor'] = r"\(%s=%s\)" % (str( data['conductor']), factored_conductor) data['galois_group'] = group_pretty_and_nTj(n, t, True) data['auts'] = db.gps_transitive.lookup(r'{}T{}'.format(n, t))['auts'] data['cclasses'] = cclasses_display_knowl(n, t) data['character_table'] = character_table_display_knowl(n, t) data['class_group'] = nf.class_group() data['class_group_invs'] = nf.class_group_invariants() data['signature'] = nf.signature() data['coefficients'] = nf.coeffs() nf.make_code_snippets() D = nf.disc() data['disc_factor'] = nf.disc_factored_latex() if D.abs().is_prime() or D == 1: data['discriminant'] = bigint_knowl(D, cutoff=60, sides=3) else: data['discriminant'] = bigint_knowl( D, cutoff=60, sides=3) + r"\(\medspace = %s\)" % data['disc_factor'] if nf.frobs(): data['frob_data'], data['seeram'] = see_frobs(nf.frobs()) else: # fallback in case we haven't computed them in a case data['frob_data'], data['seeram'] = frobs(nf) # This could put commas in the rd, we don't want to trigger spaces data['rd'] = ('$%s$' % fixed_prec(nf.rd(), 2)).replace(',', '{,}') # Bad prime information npr = len(ram_primes) ramified_algebras_data = nf.ramified_algebras_data() if isinstance(ramified_algebras_data, str): loc_alg = '' else: # [label, latex, e, f, c, gal] loc_alg = '' for j in range(npr): if ramified_algebras_data[j] is None: loc_alg += '<tr><td>%s<td colspan="7">Data not computed' % str( ram_primes[j]).rstrip('L') else: from lmfdb.local_fields.main import show_slope_content mydat = ramified_algebras_data[j] p = ram_primes[j] loc_alg += '<tr><td rowspan="%d">$%s$</td>' % (len(mydat), str(p)) mm = mydat[0] myurl = url_for('local_fields.by_label', label=mm[0]) lab = mm[0] if mm[3] * mm[2] == 1: lab = r'$\Q_{%s}$' % str(p) loc_alg += '<td><a href="%s">%s</a><td>$%s$<td>$%d$<td>$%d$<td>$%d$<td>%s<td>$%s$' % ( myurl, lab, mm[1], mm[2], mm[3], mm[4], mm[5], show_slope_content(mm[8], mm[6], mm[7])) for mm in mydat[1:]: lab = mm[0] myurl = url_for('local_fields.by_label', label=lab) if mm[3] * mm[2] == 1: lab = r'$\Q_{%s}$' % str(p) loc_alg += '<tr><td><a href="%s">%s</a><td>$%s$<td>$%d$<td>$%d$<td>$%d$<td>%s<td>$%s$' % ( myurl, lab, mm[1], mm[2], mm[3], mm[4], mm[5], show_slope_content(mm[8], mm[6], mm[7])) loc_alg += '</tbody></table>' ram_primes = str(ram_primes)[1:-1] # Get rid of python L for big numbers ram_primes = ram_primes.replace('L', '') if not ram_primes: ram_primes = r'\textrm{None}' data['phrase'] = group_phrase(n, t) zk = nf.zk() Ra = PolynomialRing(QQ, 'a') zk = [latex(Ra(x)) for x in zk] zk = ['$%s$' % x for x in zk] zk = ', '.join(zk) grh_label = '<small>(<a title="assuming GRH" knowl="nf.assuming_grh">assuming GRH</a>)</small>' if nf.used_grh( ) else '' # Short version for properties grh_lab = nf.short_grh_string() if 'computed' in str(data['class_number']): grh_lab = '' grh_label = '' pretty_label = field_pretty(label) if label != pretty_label: pretty_label = "%s: %s" % (label, pretty_label) info.update(data) rootofunity = '%s (order $%d$)' % (nf.root_of_1_gen(), nf.root_of_1_order()) info.update({ 'label': pretty_label, 'label_raw': label, 'polynomial': web_latex(nf.poly()), 'ram_primes': ram_primes, 'integral_basis': zk, 'regulator': web_latex(nf.regulator()), 'unit_rank': nf.unit_rank(), 'root_of_unity': rootofunity, 'fund_units': nf.units_safe(), 'cnf': nf.cnf(), 'grh_label': grh_label, 'loc_alg': loc_alg }) bread.append(('%s' % nf_label_pretty(info['label_raw']), ' ')) info['downloads_visible'] = True info['downloads'] = [('worksheet', '/')] info['friends'] = [] if nf.can_class_number(): # hide ones that take a lond time to compute on the fly # note that the first degree 4 number field missed the zero of the zeta function if abs(D**n) < 50000000: info['friends'].append(('L-function', "/L/NumberField/%s" % label)) info['friends'].append(('Galois group', "/GaloisGroup/%dT%d" % (n, t))) if 'dirichlet_group' in info: info['friends'].append(('Dirichlet character group', url_for("characters.dirichlet_group_table", modulus=int(conductor), char_number_list=','.join( str(a) for a in dirichlet_chars), poly=info['polynomial']))) resinfo = [] galois_closure = nf.galois_closure() if galois_closure[0] > 0: if galois_closure[1]: resinfo.append(('gc', galois_closure[1])) if galois_closure[2]: info['friends'].append(('Galois closure', url_for(".by_label", label=galois_closure[2][0]))) else: resinfo.append(('gc', [dnc])) sextic_twins = nf.sextic_twin() if sextic_twins[0] > 0: if sextic_twins[1]: resinfo.append(('sex', r' $\times$ '.join(sextic_twins[1]))) else: resinfo.append(('sex', dnc)) siblings = nf.siblings() # [degsib list, label list] # first is list of [deg, num expected, list of knowls] if siblings[0]: for sibdeg in siblings[0]: if not sibdeg[2]: sibdeg[2] = dnc else: nsibs = len(sibdeg[2]) sibdeg[2] = ', '.join(sibdeg[2]) if nsibs < sibdeg[1]: sibdeg[2] += ', some ' + dnc resinfo.append(('sib', siblings[0])) for lab in siblings[1]: if lab: labparts = lab.split('.') info['friends'].append(("Degree %s sibling" % labparts[0], url_for(".by_label", label=lab))) arith_equiv = nf.arith_equiv() if arith_equiv[0] > 0: if arith_equiv[1]: resinfo.append( ('ae', ', '.join(arith_equiv[1]), len(arith_equiv[1]))) for aelab in arith_equiv[2]: info['friends'].append(('Arithmetically equivalent sibling', url_for(".by_label", label=aelab))) else: resinfo.append(('ae', dnc, len(arith_equiv[1]))) info['resinfo'] = resinfo learnmore = learnmore_list() title = "Number field %s" % info['label'] if npr == 1: primes = 'prime' else: primes = 'primes' if len(ram_primes) > 30: ram_primes = 'see page' else: ram_primes = '$%s$' % ram_primes properties = [('Label', nf_label_pretty(label)), ('Degree', prop_int_pretty(data['degree'])), ('Signature', '$%s$' % data['signature']), ('Discriminant', prop_int_pretty(D)), ('Root discriminant', '%s' % data['rd']), ('Ramified ' + primes + '', ram_primes), ('Class number', '%s %s' % (data['class_number'], grh_lab)), ('Class group', '%s %s' % (data['class_group_invs'], grh_lab)), ('Galois group', group_pretty_and_nTj(data['degree'], t))] downloads = [('Stored data to gp', url_for('.nf_download', nf=label, download_type='data'))] for lang in [["Magma", "magma"], ["SageMath", "sage"], ["Pari/GP", "gp"]]: downloads.append(('Download {} code'.format(lang[0]), url_for(".nf_download", nf=label, download_type=lang[1]))) from lmfdb.artin_representations.math_classes import NumberFieldGaloisGroup from lmfdb.artin_representations.math_classes import artin_label_pretty try: info["tim_number_field"] = NumberFieldGaloisGroup(nf._data['coeffs']) arts = [ z.label() for z in info["tim_number_field"].artin_representations() ] #print arts for ar in arts: info['friends'].append(( 'Artin representation ' + artin_label_pretty(ar), url_for( "artin_representations.render_artin_representation_webpage", label=ar))) v = nf.factor_perm_repn(info["tim_number_field"]) def dopow(m): if m == 0: return '' if m == 1: return '*' return '*<sup>%d</sup>' % m info["mydecomp"] = [dopow(x) for x in v] except AttributeError: pass return render_template("nf-show-field.html", properties=properties, credit=NF_credit, title=title, bread=bread, code=nf.code, friends=info.pop('friends'), downloads=downloads, learnmore=learnmore, info=info, KNOWL_ID="nf.%s" % label)
def render_artin_representation_webpage(label): if re.compile(r'^\d+$').match(label): return artin_representation_search(**{'dimension': label, 'search_array': ArtinSearchArray()}) # label=dim.cond.nTt.indexcj, c is literal, j is index in conj class # Should we have a big try around this to catch bad labels? clean_label = clean_input(label) if clean_label != label: return redirect(url_for('.render_artin_representation_webpage', label=clean_label), 301) # We could have a single representation or a Galois orbit case = parse_any(label) if case[0] == 'malformed': try: raise ValueError except Exception: flash_error("%s is not in a valid form for the label for an Artin representation or a Galois orbit of Artin representations", label) return redirect(url_for(".index")) # Do this twice to customize error messages newlabel = case[1] case = case[0] if case == 'rep': try: the_rep = ArtinRepresentation(newlabel) except Exception: newlabel = parse_artin_label(label) flash_error("Artin representation %s is not in database", label) return redirect(url_for(".index")) else: # it is an orbit try: the_rep = ArtinRepresentation(newlabel+'.a') except Exception: newlabel = parse_artin_orbit_label(newlabel) flash_error("Galois orbit of Artin representations %s is not in database", label) return redirect(url_for(".index")) # in this case we want all characters num_conj = the_rep.galois_conjugacy_size() allchars = [ ArtinRepresentation(newlabel+'.'+num2letters(j)).character_formatted() for j in range(1,num_conj+1)] label = newlabel bread = get_bread([(artin_label_pretty(label), ' ')]) #artin_logger.info("Found %s" % (the_rep._data)) if case=='rep': title = "Artin representation %s" % label else: title = "Galois orbit of Artin representations %s" % label the_nf = the_rep.number_field_galois_group() if the_rep.sign() == 0: processed_root_number = "not computed" else: processed_root_number = '$%s$' % the_rep.sign() properties = [("Label", artin_label_pretty(label)), ("Dimension", prop_int_pretty(the_rep.dimension())), ("Group", the_rep.group()), ("Conductor", prop_int_pretty(the_rep.conductor()))] if case == 'rep': properties.append( ("Root number", processed_root_number) ) properties.append( ("Indicator", prop_int_pretty(the_rep.indicator())) ) friends = [] wnf = None proj_wnf = None nf_url = the_nf.url_for() if nf_url: friends.append(("Field {}".format(the_nf.label()), nf_url)) wnf = the_nf.wnf() proj_wnf = WebNumberField.from_coeffs(the_rep._data['Proj_Polynomial']) if proj_wnf.is_in_db(): proj_coefs = [int(z) for z in proj_wnf.coeffs()] if proj_coefs != the_nf.polynomial(): friends.append(("Field {}".format(proj_wnf.get_label()), str(url_for("number_fields.by_label", label=proj_wnf.get_label())))) if case == 'rep': cc = the_rep.central_character() if cc is not None: if the_rep.dimension()==1: if cc.order == 2: cc_name = cc.symbol else: cc_name = cc.texname friends.append(("Dirichlet character "+cc_name, url_for("characters.render_Dirichletwebpage", modulus=cc.modulus, number=cc.number))) else: detrep = the_rep.central_character_as_artin_rep() friends.append(("Determinant "+detrep.label(), detrep.url_for())) add_lfunction_friends(friends,label) # once the L-functions are in the database, the link can always be shown #if the_rep.dimension() <= 6: if the_rep.dimension() == 1: # Zeta is loaded differently if cc.modulus == 1 and cc.number == 1: friends.append(("L-function", url_for("l_functions.l_function_dirichlet_page", modulus=cc.modulus, number=cc.number))) else: # looking for Lhash dirichlet_L_modulus.number mylhash = 'dirichlet_L_%d.%d'%(cc.modulus,cc.number) lres = db.lfunc_instances.lucky({'Lhash': mylhash}) if lres is not None: friends.append(("L-function", url_for("l_functions.l_function_dirichlet_page", modulus=cc.modulus, number=cc.number))) # Dimension > 1 elif int(the_rep.conductor())**the_rep.dimension() <= 729000000000000: friends.append(("L-function", url_for("l_functions.l_function_artin_page", label=the_rep.label()))) orblabel = re.sub(r'\.[a-z]+$', '', label) friends.append(("Galois orbit " + artin_label_pretty(orblabel), url_for(".render_artin_representation_webpage", label=orblabel))) else: add_lfunction_friends(friends,label) friends.append(("L-function", url_for("l_functions.l_function_artin_page", label=the_rep.label()))) for j in range(1,1+the_rep.galois_conjugacy_size()): newlabel = label+'.'+num2letters(j) friends.append(("Artin representation " + artin_label_pretty(newlabel), url_for(".render_artin_representation_webpage", label=newlabel))) info={} # for testing if case == 'rep': return render_template( "artin-representation-show.html", title=title, bread=bread, friends=friends, object=the_rep, cycle_string=cycle_string, wnf=wnf, proj_wnf=proj_wnf, properties=properties, info=info, learnmore=learnmore_list(), KNOWL_ID="artin.%s" % label, ) # else we have an orbit return render_template( "artin-representation-galois-orbit.html", title=title, bread=bread, allchars=allchars, friends=friends, object=the_rep, cycle_string=cycle_string, wnf=wnf, proj_wnf=proj_wnf, properties=properties, info=info, learnmore=learnmore_list(), KNOWL_ID="artin.%s" % label, )