CoCalc -- period-lattice-sage.ipynb

Kernel: SageMath (stable)

In [11]:

A = 2; B = 3
E = EllipticCurve([A, B])
show(E)
show(E.period_lattice().basis())
show(E.period_lattice().basis(prec=150))  # more bits of precision
show(plot(E))  # what E(RR) looks like

In [12]:

L = E.period_lattice()
L._compute_periods_real??

In [13]:

L??

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-13-e33de4ada6d5> in <module>()
----> 1 E._abc

/ext/sage/sage-8.8_1804/local/lib/python2.7/site-packages/sage/structure/category_object.pyx in sage.structure.category_object.CategoryObject.__getattr__ (build/cythonized/sage/structure/category_object.c:6865)()
    832             AttributeError: 'PrimeNumbers_with_category' object has no attribute 'sadfasdf'
    833         """
--> 834         return self.getattr_from_category(name)
    835 
    836     cdef getattr_from_category(self, name):
/ext/sage/sage-8.8_1804/local/lib/python2.7/site-packages/sage/structure/category_object.pyx in sage.structure.category_object.CategoryObject.getattr_from_category (build/cythonized/sage/structure/category_object.c:7028)()
    847                 cls = self._category.parent_class
    848 
--> 849             attr = getattr_from_other_class(self, cls, name)
    850             self.__cached_methods[name] = attr
    851             return attr
/ext/sage/sage-8.8_1804/local/lib/python2.7/site-packages/sage/cpython/getattr.pyx in sage.cpython.getattr.getattr_from_other_class (build/cythonized/sage/cpython/getattr.c:2540)()
    387         dummy_error_message.cls = type(self)
    388         dummy_error_message.name = name
--> 389         raise AttributeError(dummy_error_message)
    390     cdef PyObject* attr = instance_getattr(cls, name)
    391     if attr is NULL:
AttributeError: 'EllipticCurve_rational_field_with_category' object has no attribute '_abc'

In [0]: