[Merged by Bors] - chore(Topology/Algebra/Module/LinearMap): deprecate duplicate lemmas

[themathqueen]

Now that range and ker take in a LinearMap instead of a LinearMapClass, these lemmas are the same thing as the linear map versions.

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[github-actions]

PR summary a36c84ab82

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

+ IsIdempotentElem.ker_eq_range_one_sub
+ IsIdempotentElem.range_eq_ker_one_sub
- ContinuousLinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_range

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[Ruben-VandeVelde]

Does dot notation not work?

[themathqueen]

Not here because both ContinuousLinearMap and LinearMap namespaces are opened, so Lean gets confused which ker_eq_range to use. We would be able to use dot notation after removing the deprecation in 6 months.

[ocfnash]

Thanks!

bors merge

[mathlib-bors]

Build failed:

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[ocfnash]

I think that's a spurious bors failure so let's try again:

bors merge

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded!

And happy new year! 🎉

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