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New file with module types #1013

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AlexD97
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@AlexD97 AlexD97 commented Jan 25, 2022

The module types are in a new file.

Moreover, hom for free graded modules is implemented.

@fingolfin
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There are a gazillion pointless merge commits in this PR, so either we squash-merge this, or the PR history is rewritten before merge to get rid of these (e.g. by @AlexD97 squashing everything into a single commit based on latest master)

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It is really hard to see what's going on, as you move code, and modify it, all in one go; the individual commits are no help easier.

It'd be much easier if there were two commits: one that moves all the code into the new file, but doesn't modify it otherwise; and a second which performs the actual modification. As it is, I don't think there is an effective way to review this PR, we just have to trust you

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Some minor remarks that are probably for old code, but I happened to notice it while reading...

@doc Markdown.doc"""
ModuleFP{T}

The abstract supertype of all modules. Here, all modules are finitely presented.
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Isn't an oxymoron? So perhaps:

Suggested change
The abstract supertype of all modules. Here, all modules are finitely presented.
The abstract supertype of all finitely presented modules.

ModuleFP{T}

The abstract supertype of all modules. Here, all modules are finitely presented.
The type variable `T` refers to the type of the elements of the base ring.
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Good, ideally all our type docstrings should explain the meaning of the various type parameters :-)

@doc Markdown.doc"""
AbstractFreeMod{T} <: ModuleFP{T}

The abstract supertype of all free modules.
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Suggested change
The abstract supertype of all free modules.
The abstract supertype of all finitely generated free modules.

@doc Markdown.doc"""
AbstractSubQuo{T} <: ModuleFP{T}

The abstract supertype of all subquotient modules.
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Suggested change
The abstract supertype of all subquotient modules.
The abstract supertype of all finitely presented subquotient modules.

@doc Markdown.doc"""
AbstractFreeModElem{T} <: ModuleFPElem{T}

The abstract supertype of all elements of free modules.
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Suggested change
The abstract supertype of all elements of free modules.
The abstract supertype of all elements of finitely generated free modules.

@AlexD97 AlexD97 closed this Jan 28, 2022
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2 participants