curprev15:2915:29, 5 July 2023 Uscitizenjasontalkcontribs m56,765 bytes−101 change free variable in Sturm--Louiville from unfamiliar varphi(x) to familiar y(x) to improve accessibility and consistency with beginning of articleundo
curprev21:2221:22, 14 May 2021 Mgkrupatalkcontribs 55,234 bytes+731 Reworded and other copy editing to make this article more compliant with MOS:MATH. Unicode math symbols like ∪, ∩, ≠, ≤, →, ∀, ∃, ∈,∑, ⊕, √, ∞, etc., Unicode letters like σ, ℱ, 𝔉, 𝔽, ℝ, ℂ, ℕ, etc., and other symbols that might not render correctly in some browsers should be avoided (e.g. by replacing them with LaTeX equivalents)undo
curprev07:5607:56, 21 November 2020 37.44.138.134talk 54,474 bytes+2 →Extrema: Changed one occurence of "weak" into "strong", to resolve an inconsistency. If weak had an additional requirement, it would not have to be the case that all strong were also weak.undoTags: Mobile editMobile web edit