id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
28921 Mixed Forms - Zero Treatment for Scalar Multiplication gh-DeRhamSource "Now we have:
{{{
sage: M = Manifold(2, 'M')
sage: X. = M.chart()
sage: A = M.mixed_form([1,0,0], name='A')
sage: 0*A
Mixed differential form 0/\A on the 2-dimensional differentiable manifold M
}}}
Better is:
{{{
sage: M = Manifold(2, 'M')
sage: X. = M.chart()
sage: A = M.mixed_form([1,0,0], name='A')
sage: 0*A
Mixed differential form zero on the 2-dimensional differentiable manifold M
sage: (0*A) is M.mixed_form_algebra().zero()
True
sage: 1*A is A
True
}}}" enhancement closed major sage-9.1 geometry fixed mixed-forms, manifolds tscrim egourgoulhon Michael Jung Travis Scrimshaw N/A 3226bc5d5a3d917d7d682ec06f4ff08c49cfbb16