JuliaApproximation / JuliaApproximation/MultivariateOrthogonalPolynomials.jl

Lowering bug?

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Julia
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20
Forks
6
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2d 17h
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Description

@dlfivefifty The lowering Zernike(0,1) \ Weighted(Zernike(0,1)) is a factor of 2 off. This also seems to be confirmed in the tests..?

https://github.com/JuliaApproximation/MultivariateOrthogonalPolynomials.jl/blob/cb0fb241eecc49fbdb873a5cd2b7de098897d355/test/test_disk.jl#L303

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Research direction

Start by reading the lowering case for Zernike(0,1) \ Weighted(Zernike(0,1)) at test/test_disk.jl line 303 and run the relevant disk tests. Trace the lowering behavior that produces the factor-of-two difference, then determine whether the discrepancy is expected or a bug. Done means the behavior is explained and, if incorrect, the implementation and test agree with the intended normalization.

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Assessment

Tech stack
julia
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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