Estimates for Green’s functions
Estimates for Green’s functions
Let <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="l Subscript q Baseline equals minus nabla squared plus q left-parenthesis x right-parenthesis comma x element-of upper R cubed comma 0 less-than-or-equal-to q less-than-or-equal-to c left-parenthesis 1 plus StartAbsoluteValue x EndAbsoluteValue right-parenthesis Superscript negative a Baseline comma a greater-than 2 comma l Subscript q Baseline …