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## Feature request
Dear Numba developer in may prohect i need [**polyval3d**(x, y, z, c)](https://github.com/numpy/numpy/blob/v2.1.0/numpy/polynomial/polynomial.py#L976-L1031). This function is imp…
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### Ring Polynomial Implementation
## Description
Implement ring polynomial, since we might need different D and R configuration, the type needs to be flexible
## Required functionality
- Multip…
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This would remove the unnecessary coefficientModulus, since the coefficientType will encode the modulus if we have a modarith type.
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## Issue Description
During CI builds, test_extrapolator is failing with a polynomial normalization error in Sum.cpp:1478.
### Error Message
```
Need normalized polynomial of f(v8) to get its coeffic…
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There are many places in EvalChebyshevPS/EvalPolyPS and InnerEvalChebyshevPS/InnerEvalPolyPS where fewer copies should be made and the code streamlined.
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(This extracts as a new issue the confusion mentioned in https://github.com/RobotLocomotion/drake/issues/6219#issuecomment-305580534 of #6219)
(This relates to #4460 and #4911)
(This relates to the …
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Posted here following discussion with @rhugonnet
Currently, `xdem` [calculates terrain coefficients](https://github.com/GlacioHack/xdem/blob/main/xdem/terrain.py) over a 3x3 window following Zeven…
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### Steps To Reproduce
```
sage: Q. = Frac(QQ['z'])
sage: R. = Q[]
sage: r = x*y - (2*z-1)/(z^2+z+1) * x + y/z
sage: p = r * (x + z*y - 1/z^2)
sage: p // p
```
### Expected Behavior
Should …
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Consider the standard form of polynomials:
Consider evaluating a given polynomial `P(x)` at some real v…
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For geometric constructions (e.g. taking the direct product of two varieties) it would be quite handy to have a function which computes the tensor product of two (or possibly more) polynomial rings. I…