M ⁡ ( z ) <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <apply id="p1.1.m1.1.1.1.cmml" xref="p1.1.m1.1.1.7.2"> <csymbol cd="dlmf" id="p1.1.m1.1.1.2.1.1.cmml" xref="p1.1.m1.1.1.2.1.2">modulus-Airy-M</csymbol> <ci id="p1.1.m1.1.1.5.cmml" xref="p1.1.m1.1.1.5">𝑧</ci> </apply> </annotation-xml> {\displaystyle{\displaystyle M\left(\NVar{z}\right)}}
x <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝑥</ci> </annotation-xml> {\displaystyle{\displaystyle x}}
ξ <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b"> <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝜉</ci> </annotation-xml> {\displaystyle{\displaystyle\xi}}