z^(1/2) == Sqrt[z]
Cell[BoxData[RowBox[List[SuperscriptBox["z", FractionBox["1", "2"]], "\[Equal]", SqrtBox["z"]]]]]
<math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'> <semantics> <mrow> <msup> <mi> z </mi> <mrow> <mn> 1 </mn> <mo> / </mo> <mn> 2 </mn> </mrow> </msup> <mo> ⩵ </mo> <msqrt> <mi> z </mi> </msqrt> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <power /> <ci> z </ci> <cn type='rational'> 1 <sep /> 2 </cn> </apply> <apply> <power /> <ci> z </ci> <cn type='rational'> 1 <sep /> 2 </cn> </apply> </apply> </annotation-xml> </semantics> </math>
Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SqrtBox["z_"], "]"]], "\[RuleDelayed]", SqrtBox["z"]]]]]
2001-10-29