Exemple #1
0
def AbelianVariety(X):
    """
    Create the abelian variety corresponding to the given defining
    data.

    INPUT:


    -  ``X`` - an integer, string, newform, modsym space,
       congruence subgroup or tuple of congruence subgroups


    OUTPUT: a modular abelian variety

    EXAMPLES::

        sage: AbelianVariety(Gamma0(37))
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety('37a')
        Newform abelian subvariety 37a of dimension 1 of J0(37)
        sage: AbelianVariety(Newform('37a'))
        Newform abelian subvariety 37a of dimension 1 of J0(37)
        sage: AbelianVariety(ModularSymbols(37).cuspidal_submodule())
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety((Gamma0(37), Gamma0(11)))
        Abelian variety J0(37) x J0(11) of dimension 3
        sage: AbelianVariety(37)
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety([1,2,3])
        Traceback (most recent call last):
        ...
        TypeError: X must be an integer, string, newform, modsym space, congruence subgroup or tuple of congruence subgroups
    """
    if isinstance(X, (int, long, Integer)):
        X = Gamma0(X)
    if is_CongruenceSubgroup(X):
        X = X.modular_symbols().cuspidal_submodule()
    elif isinstance(X, str):
        from sage.modular.modform.constructor import Newform
        f = Newform(X, names='a')
        return ModularAbelianVariety_newform(f, internal_name=True)
    elif isinstance(X, sage.modular.modform.element.Newform):
        return ModularAbelianVariety_newform(X)

    if is_ModularSymbolsSpace(X):
        return abvar.ModularAbelianVariety_modsym(X)

    if isinstance(X,
                  (tuple, list)) and all([is_CongruenceSubgroup(G)
                                          for G in X]):
        return abvar.ModularAbelianVariety(X)

    raise TypeError(
        "X must be an integer, string, newform, modsym space, congruence subgroup or tuple of congruence subgroups"
    )
Exemple #2
0
def AbelianVariety(X):
    """
    Create the abelian variety corresponding to the given defining
    data.

    INPUT:


    -  ``X`` - an integer, string, newform, modsym space,
       congruence subgroup or tuple of congruence subgroups


    OUTPUT: a modular abelian variety

    EXAMPLES::

        sage: AbelianVariety(Gamma0(37))
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety('37a')
        Newform abelian subvariety 37a of dimension 1 of J0(37)
        sage: AbelianVariety(Newform('37a'))
        Newform abelian subvariety 37a of dimension 1 of J0(37)
        sage: AbelianVariety(ModularSymbols(37).cuspidal_submodule())
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety((Gamma0(37), Gamma0(11)))
        Abelian variety J0(37) x J0(11) of dimension 3
        sage: AbelianVariety(37)
        Abelian variety J0(37) of dimension 2
        sage: AbelianVariety([1,2,3])
        Traceback (most recent call last):
        ...
        TypeError: X must be an integer, string, newform, modsym space, congruence subgroup or tuple of congruence subgroups
    """
    if isinstance(X, (int, long, Integer)):
        X = Gamma0(X)
    if is_CongruenceSubgroup(X):
        X = X.modular_symbols().cuspidal_submodule()
    elif isinstance(X, str):
        from sage.modular.modform.constructor import Newform
        f = Newform(X, names='a')
        return ModularAbelianVariety_newform(f, internal_name=True)
    elif isinstance(X, sage.modular.modform.element.Newform):
        return ModularAbelianVariety_newform(X)

    if is_ModularSymbolsSpace(X):
        return abvar.ModularAbelianVariety_modsym(X)

    if isinstance(X, (tuple,list)) and all([is_CongruenceSubgroup(G) for G in X]):
        return abvar.ModularAbelianVariety(X)

    raise TypeError("X must be an integer, string, newform, modsym space, congruence subgroup or tuple of congruence subgroups")