Quaternion algebras seem to have a function discriminant(), but this fails when I try to use it. Here is an example -- as far as I can tell the problem might actually be in gram_matrix():
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| SAGE Version 2.4.1.2, Release Date: 2007-03-28 |
| Type notebook() for the GUI, and license() for information. |
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sage: B.<i,j,k> = QuaternionAlgebra(QQ,-3,-1)
sage: B
Quaternion algebra with generators (i, j, k) over Rational Field
sage: B.discriminant()
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<type 'exceptions.AttributeError'> Traceback (most recent call last)
/home/ghitza/python/<ipython console> in <module>()
/opt/sage/local/lib/python2.5/site-packages/sage/algebras/quaternion_algebra.py in discriminant(self)
349
350 def discriminant(self):
--> 351 return self.gram_matrix().determinant()
352
353 def gram_matrix(self):
/opt/sage/local/lib/python2.5/site-packages/sage/algebras/quaternion_algebra.py in gram_matrix(self)
353 def gram_matrix(self):
354 V = self.__vector_space
--> 355 if not V._FreeModule_generic__inner_product_is_dot_product:
356 return V.inner_product_matrix()
357 K = self.base_ring()
<type 'exceptions.AttributeError'>: 'FreeModule_ambient_field' object has no attribute '_FreeModule_generic__inner_product_is_dot_product'
williamstein
commented
17 years ago
Quaternion algebras seem to have a function discriminant(), but this fails when I try to use it. Here is an example -- as far as I can tell the problem might actually be in gram_matrix():
Component: packages: standard
Issue created by migration from https://trac.sagemath.org/ticket/337