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Cartan eilenberg resolutions #4248

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HechtiDerLachs
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This is a draft PR for adding Cartan-Eilenberg resolutions for complexes of modules.

I am working on this because I use it in a paper which I am going to present in this conference. This is still work in progress, but I want to keep it up to date with the current OSCAR and make sure that tests are running.

@HechtiDerLachs HechtiDerLachs marked this pull request as draft October 25, 2024 13:33
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codecov bot commented Oct 25, 2024

Codecov Report

Attention: Patch coverage is 78.22581% with 27 lines in your changes missing coverage. Please review.

Project coverage is 84.59%. Comparing base (eaa8972) to head (d5eaa1e).
Report is 79 commits behind head on master.

Files with missing lines Patch % Lines
...mplexes/src/Objects/cartan_eilenberg_resolution.jl 75.67% 27 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##           master    #4248      +/-   ##
==========================================
- Coverage   84.59%   84.59%   -0.01%     
==========================================
  Files         631      632       +1     
  Lines       85064    85177     +113     
==========================================
+ Hits        71960    72054      +94     
- Misses      13104    13123      +19     
Files with missing lines Coverage Δ
...tal/DoubleAndHyperComplexes/src/Morphisms/Types.jl 77.19% <100.00%> (+2.68%) ⬆️
...exes/src/Morphisms/cartan_eilenberg_resolutions.jl 88.46% <ø> (-2.17%) ⬇️
...ental/DoubleAndHyperComplexes/src/Objects/Types.jl 72.12% <100.00%> (ø)
...l/DoubleAndHyperComplexes/src/base_change_types.jl 95.23% <100.00%> (+0.23%) ⬆️
src/Modules/ModulesGraded.jl 73.72% <100.00%> (ø)
...mplexes/src/Objects/cartan_eilenberg_resolution.jl 75.67% <75.67%> (ø)

... and 6 files with indirect coverage changes

@HechtiDerLachs HechtiDerLachs marked this pull request as ready for review November 13, 2024 11:27
@fieker
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fieker commented Nov 13, 2024

@wdecker is dealing with it

@jankoboehm
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Looks good from my side.

@@ -414,7 +414,7 @@ function set_grading!(M::FreeMod, W::Vector{<:IntegerUnion})
M.d = [W[i] * A[1] for i in 1:length(W)]
end

function degrees(M::FreeMod)
function degrees(M::FreeMod; check::Bool=true)
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What is this check argument for? I am asking because it is not used in the function body. Is it just for consistency with other module types?

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It's for compatibility with the other signatures, yes.

@HechtiDerLachs
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Can this be merged? I would like to rebase #4327 on this, once we're ready.

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@jankoboehm said it looks good, so I merge.

@joschmitt joschmitt merged commit ea8bd99 into oscar-system:master Nov 26, 2024
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@HechtiDerLachs HechtiDerLachs deleted the cartan_eilenberg_resolutions branch November 26, 2024 06:41
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5 participants