[Merged by Bors] - chore(LinearAlgebra): make one more argument implicit in ker_toSpanSingleton

[YaelDillies]

M can be inferred from x : M which can be inferred from h : x ≠ 0. Similarly for ker_toSpanSingleton_eq_bot_iff.

---

[github-actions]

PR summary db90f79240

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

No declarations were harmed in the making of this PR! 🐙

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.

---

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).

[artie2000]

This PR also makes the arguments of ker_toSpanSingleton_eq_bot_iff implicit. I think this is good but you should probably mention it.

[jcommelin]

Thanks 🎉

bors merge

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded:

• Build
• Lint style
• Post-Build Step