Revision history [back]

This only took a few minutes in 6.4.beta:

• sage: D=DirichletGroup(20);
• sage: g=D[7].extend(1600); #
• sage: S=ModularSymbols(g,2,sign=1).cuspidal_subspace().new_submodule()
• sage: S
• Modular Symbols subspace of dimension 34 of Modular Symbols space of dimension 240 and level 1600, weight 2, character [-1, 1, -zeta4], sign 1, over Cyclotomic Field of order 4 and degree 2
• sage: version() 'Sage Version 6.4.beta3, Release Date: 2014-09-10'

This only took a few minutes in 6.4.beta:6.4.beta3:

This only took a few minutes in 6.4.beta3:

sage: version()
'Sage Version 6.4.beta3, Release Date: 2014-09-10'
sage: D=DirichletGroup(20);
D = DirichletGroup(20)
sage: g=D[7].extend(1600); #
g = D[7].extend(1600)
sage: S=ModularSymbols(g,2,sign=1).cuspidal_subspace().new_submodule()                         
S = ModularSymbols(g,2,sign=1).cuspidal_subspace().new_submodule()
sage: S
Modular Symbols subspace of dimension 34 of Modular Symbols space of dimension 240 and level 1600, weight 2,   character [-1, 1, -zeta4], sign 1, over Cyclotomic Field of order 4 and degree 2