Comments (4)
Right that wasn't really a serious proposition. But we should support at minimum both
from continuumarrays.jl.
The reason we like having Derivative
is for making operators like
(ε*D^2 + x .* D + I) * T
In theory an option is to no longer support this and force users to do
ε*diff(diff(T;dims=1); dims=1) + x .* diff(T; dims=1) + T
from continuumarrays.jl.
I would be very unhappy with version (2), not least because I would have to rewrite a lot of code, but also because I feel it is much uglier. I guess supporting this as an alternative is fine.
How would you apply the transpose of an operator this way?
from continuumarrays.jl.
My use case is usually R'*A*R
where R isa Basis
and A
is some kind of linear operator, so I'm mostly interested in generating matrix representations of linear operators. I have not yet worked with storing linear operators lazily and applying them on-the-fly; I'm assuming that in the example above T = R*c
for some vector c
of expansion coefficients.
from continuumarrays.jl.
Related Issues (20)
- simplify macro does not permit templating? HOT 1
- export diagonal?
- Continuum indices HOT 10
- Continous Linear Algebra HOT 1
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- Split out transform from factorize
- Derivative -> Diff? HOT 2
- Inner product between bases on different grids, basis transforms HOT 1
- Support syntax for kernels HOT 14
- Plot quasivector HOT 5
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- Support (T/T) \ f for expansions HOT 1
- Product of QuasiDiagonals fails
- Support Plotting HOT 10
- Rename or don't export `grid` HOT 1
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from continuumarrays.jl.