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feat: make informal_definition and informal_lemma commands (#300)

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* make informal_definition and informal_lemma commands
* drop the fields "math", "physics", and "proof" from InformalDefinition/InformalLemma and use docstrings instead
* render informal docstring in dependency graph
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KUO-TSAN HSU (Gordon) 2025-02-02 03:17:17 +08:00 • committed by GitHub
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HepLean/Lorentz/SL2C/Basic.lean
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@ -307,9 +307,9 @@ lemma toLorentzGroup_det_one (M : SL(2, ℂ)) : det (toLorentzGroup M).val = 1 :
_ = M.val.det := congrArg det h.symm
_ = 1 := M.property
/-- The homomorphism from `SL(2, ℂ)` to the restricted Lorentz group. -/
informal_lemma toRestrictedLorentzGroup where
math :≈ "The homomorphism from `SL(2, ℂ)` to the restricted Lorentz group."
deps :≈ [``toLorentzGroup, ``toLorentzGroup_det_one, ``toLorentzGroup_isOrthochronous,
deps := [``toLorentzGroup, ``toLorentzGroup_det_one, ``toLorentzGroup_isOrthochronous,
``LorentzGroup.Restricted]
TODO "Define homomorphism from `SL(2, ℂ)` to the restricted Lorentz group."