∂ ⁡ x <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <apply id="p1.1.m1.1.1.1.cmml" xref="p1.1.m1.1.1.2"> <partialdiff id="p1.1.m1.1.1.1.1.cmml" xref="p1.1.m1.1.1.2.1"/> <ci id="p1.1.m1.1.1.2.2.cmml" xref="p1.1.m1.1.1.2.2">𝑥</ci> </apply> </annotation-xml> {\displaystyle{\displaystyle\partial\NVar{x}}}
z <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝑧</ci> </annotation-xml> {\displaystyle{\displaystyle z}}
γ <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝛾</ci> </annotation-xml> {\displaystyle{\displaystyle\gamma}}
δ <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝛿</ci> </annotation-xml> {\displaystyle{\displaystyle\delta}}
ϵ <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">italic-ϵ</ci> </annotation-xml> {\displaystyle{\displaystyle\epsilon}}
a <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝑎</ci> </annotation-xml> {\displaystyle{\displaystyle a}}
α <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝛼</ci> </annotation-xml> {\displaystyle{\displaystyle\alpha}}
β <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝛽</ci> </annotation-xml> {\displaystyle{\displaystyle\beta}}
real or complex parameter