Mathlib Map

Structures · Algebra

RootPairing.IsAnisotropic

We say a finite root pairing is anisotropic if there are no roots / coroots which have length zero w.r.t. the root / coroot forms. Examples include crystallographic pairings in characteristic zero RootPairing.instIsAnisotropicOfIsCrystallographic and pairings over ordered scalars. RootPairing.instIsAnisotropicOfLinearOrderedCommRing.

Defined in
Mathlib.LinearAlgebra.RootSystem.Finite.Nondegenerate
Shape
One type argument · adds rootForm_root_ne_zero, corootForm_coroot_ne_zero

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