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Use parity in basis subspaces #2801

Merged
merged 6 commits into from
Nov 29, 2020
Merged

Use parity in basis subspaces #2801

merged 6 commits into from
Nov 29, 2020

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pleroy
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@pleroy pleroy commented Nov 29, 2020

Also a microoptimization of the evaluation of Poisson series.

#2400.

// i / (2 * dimension), so that the overall parity of that basis
// element is (i / dimension + i / (2 * dimension)) % 2, which
// simplifies to (3 * i / (2 * dimension)) % 2.
// ⌊i / dimension⌋ mod 2; the degrees its polynomial factor is
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The degree, singular (this is remnant from an unsuccessful attempt to phrase this in terms of indices).

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@eggrobin eggrobin added the LGTM label Nov 29, 2020
@pleroy pleroy merged commit d74f564 into mockingbirdnest:master Nov 29, 2020
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