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   http://functions.wolfram.com/09.15.13.0004.01
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    (Subscript[g, 2]^3 - 27 Subscript[g, 3]^2) 
  D[WeierstrassSigma[z, {Subscript[g, 2], Subscript[g, 3]}], 
   Subscript[g, 2]] == (-(9/4)) Subscript[g, 3] 
   D[WeierstrassSigma[z, {Subscript[g, 2], Subscript[g, 3]}], {z, 2}] - 
  (1/4) Subscript[g, 2]^2 WeierstrassSigma[z, {Subscript[g, 2], 
     Subscript[g, 3]}] - (3/16) Subscript[g, 2] Subscript[g, 3] z^2 
   WeierstrassSigma[z, {Subscript[g, 2], Subscript[g, 3]}] + 
  (1/4) Subscript[g, 2]^2 z D[WeierstrassSigma[z, 
     {Subscript[g, 2], Subscript[g, 3]}], z] 
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   Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["(", RowBox[List[SubsuperscriptBox["g", "2", "3"], "-", RowBox[List["27", SubsuperscriptBox["g", "3", "2"]]]]], ")"]], " ", RowBox[List[SubscriptBox["\[PartialD]", SubscriptBox["g", "2"]], RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["g", "2"], ",", SubscriptBox["g", "3"]]], "}"]]]], "]"]]]]]], "\[Equal]", RowBox[List[RowBox[List[RowBox[List["-", FractionBox["9", "4"]]], " ", SubscriptBox["g", "3"], " ", RowBox[List[SubscriptBox["\[PartialD]", RowBox[List["{", RowBox[List["z", ",", "2"]], "}"]]], RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["g", "2"], ",", SubscriptBox["g", "3"]]], "}"]]]], "]"]]]]]], "-", RowBox[List[FractionBox["1", "4"], " ", SubsuperscriptBox["g", "2", "2"], " ", RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["g", "2"], ",", SubscriptBox["g", "3"]]], "}"]]]], "]"]]]], "-", RowBox[List[FractionBox["3", "16"], " ", SubscriptBox["g", "2"], " ", SubscriptBox["g", "3"], " ", SuperscriptBox["z", "2"], " ", RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["g", "2"], ",", SubscriptBox["g", "3"]]], "}"]]]], "]"]]]], "+", RowBox[List[FractionBox["1", "4"], " ", SubsuperscriptBox["g", "2", "2"], " ", "z", " ", RowBox[List[SubscriptBox["\[PartialD]", "z"], RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["g", "2"], ",", SubscriptBox["g", "3"]]], "}"]]]], "]"]]]]]]]]]]]] 
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   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <msubsup>  <mi> g </mi>  <mn> 2 </mn>  <mn> 3 </mn>  </msubsup>  <mo> - </mo>  <mrow>  <mn> 27 </mn>  <mo> ⁢ </mo>  <msubsup>  <mi> g </mi>  <mn> 3 </mn>  <mn> 2 </mn>  </msubsup>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mfrac>  <mrow>  <mo> ∂ </mo>  <semantics>  <mrow>  <mi> σ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> z </mi>  <mo> ; </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List["\[Sigma]", "(", RowBox[List[RowBox[List[TagBox["z", Rule[Editable, True]], ";", TagBox[SubscriptBox["g", "2"], Rule[Editable, True]]]], ",", TagBox[SubscriptBox["g", "3"], Rule[Editable, True]]]], ")"]], InterpretTemplate[Function[WeierstrassSigma[Slot[1], List[Slot[2], Slot[3]]]]]] </annotation>  </semantics>  </mrow>  <mrow>  <mo> ∂ </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  </mfrac>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mfrac>  <mn> 9 </mn>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> ⁢ </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  <mo> ⁢ </mo>  <mfrac>  <mrow>  <msup>  <mo> ∂ </mo>  <mn> 2 </mn>  </msup>  <semantics>  <mrow>  <mi> σ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> z </mi>  <mo> ; </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List["\[Sigma]", "(", RowBox[List[RowBox[List[TagBox["z", Rule[Editable, True]], ";", TagBox[SubscriptBox["g", "2"], Rule[Editable, True]]]], ",", TagBox[SubscriptBox["g", "3"], Rule[Editable, True]]]], ")"]], InterpretTemplate[Function[WeierstrassSigma[Slot[1], List[Slot[2], Slot[3]]]]]] </annotation>  </semantics>  </mrow>  <mrow>  <mo> ∂ </mo>  <msup>  <mi> z </mi>  <mn> 2 </mn>  </msup>  </mrow>  </mfrac>  </mrow>  <mo> - </mo>  <mrow>  <mfrac>  <mn> 1 </mn>  <mn> 4 </mn>  </mfrac>  <mo> ⁢ </mo>  <msubsup>  <mi> g </mi>  <mn> 2 </mn>  <mn> 2 </mn>  </msubsup>  <mo> ⁢ </mo>  <semantics>  <mrow>  <mi> σ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> z </mi>  <mo> ; </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List["\[Sigma]", "(", RowBox[List[RowBox[List[TagBox["z", Rule[Editable, True]], ";", TagBox[SubscriptBox["g", "2"], Rule[Editable, True]]]], ",", TagBox[SubscriptBox["g", "3"], Rule[Editable, True]]]], ")"]], InterpretTemplate[Function[WeierstrassSigma[Slot[1], List[Slot[2], Slot[3]]]]]] </annotation>  </semantics>  </mrow>  <mo> - </mo>  <mrow>  <mfrac>  <mn> 3 </mn>  <mn> 16 </mn>  </mfrac>  <mo> ⁢ </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  <mo> ⁢ </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  <mo> ⁢ </mo>  <msup>  <mi> z </mi>  <mn> 2 </mn>  </msup>  <mo> ⁢ </mo>  <semantics>  <mrow>  <mi> σ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> z </mi>  <mo> ; </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List["\[Sigma]", "(", RowBox[List[RowBox[List[TagBox["z", Rule[Editable, True]], ";", TagBox[SubscriptBox["g", "2"], Rule[Editable, True]]]], ",", TagBox[SubscriptBox["g", "3"], Rule[Editable, True]]]], ")"]], InterpretTemplate[Function[WeierstrassSigma[Slot[1], List[Slot[2], Slot[3]]]]]] </annotation>  </semantics>  </mrow>  <mtext>   </mtext>  <mo> + </mo>  <mrow>  <mfrac>  <mn> 1 </mn>  <mn> 4 </mn>  </mfrac>  <mo> ⁢ </mo>  <msubsup>  <mi> g </mi>  <mn> 2 </mn>  <mn> 2 </mn>  </msubsup>  <mo> ⁢ </mo>  <mi> z </mi>  <mo> ⁢ </mo>  <mfrac>  <mrow>  <mo> ∂ </mo>  <semantics>  <mrow>  <mi> σ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> z </mi>  <mo> ; </mo>  <msub>  <mi> g </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> g </mi>  <mn> 3 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List["\[Sigma]", "(", RowBox[List[RowBox[List[TagBox["z", Rule[Editable, True]], ";", TagBox[SubscriptBox["g", "2"], Rule[Editable, True]]]], ",", TagBox[SubscriptBox["g", "3"], Rule[Editable, True]]]], ")"]], InterpretTemplate[Function[WeierstrassSigma[Slot[1], List[Slot[2], Slot[3]]]]]] </annotation>  </semantics>  </mrow>  <mrow>  <mo> ∂ </mo>  <mi> z </mi>  </mrow>  </mfrac>  <mtext>   </mtext>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <eq />  <apply>  <times />  <apply>  <plus />  <apply>  <power />  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <cn type='integer'> 3 </cn>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 27 </cn>  <apply>  <power />  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  <cn type='integer'> 2 </cn>  </apply>  </apply>  </apply>  </apply>  <apply>  <ci> D </ci>  <apply>  <ci> WeierstrassSigma </ci>  <ci> z </ci>  <list>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  </list>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  </apply>  <apply>  <plus />  <apply>  <times />  <apply>  <times />  <cn type='integer'> -1 </cn>  <cn type='rational'> 9 <sep /> 4 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  <apply>  <partialdiff />  <bvar>  <ci> z </ci>  <degree>  <cn type='integer'> 2 </cn>  </degree>  </bvar>  <apply>  <ci> WeierstrassSigma </ci>  <ci> z </ci>  <list>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  </list>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='rational'> 1 <sep /> 4 </cn>  <apply>  <power />  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> WeierstrassSigma </ci>  <ci> z </ci>  <list>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  </list>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='rational'> 3 <sep /> 16 </cn>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  <apply>  <power />  <ci> z </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> WeierstrassSigma </ci>  <ci> z </ci>  <list>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  </list>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='rational'> 1 <sep /> 4 </cn>  <apply>  <power />  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <ci> z </ci>  <apply>  <partialdiff />  <bvar>  <ci> z </ci>  </bvar>  <apply>  <ci> WeierstrassSigma </ci>  <ci> z </ci>  <list>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> g </ci>  <cn type='integer'> 3 </cn>  </apply>  </list>  </apply>  </apply>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
   
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  | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List[RowBox[List["(", RowBox[List[SubsuperscriptBox["g_", "2", "3"], "-", RowBox[List["27", " ", SubsuperscriptBox["g_", "3", "2"]]]]], ")"]], " ", RowBox[List[SubscriptBox["\[PartialD]", RowBox[List[SubscriptBox["g_", "2"]]]], RowBox[List["WeierstrassSigma", "[", RowBox[List["z_", ",", RowBox[List["{", RowBox[List[SubscriptBox["g_", "2"], ",", SubscriptBox["g_", "3"]]], "}"]]]], "]"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[FractionBox["1", "4"], " ", RowBox[List["(", RowBox[List["-", "9"]], ")"]], " ", SubscriptBox["gg", "3"], " ", RowBox[List[SubscriptBox["\[PartialD]", RowBox[List[RowBox[List["{", RowBox[List["z", ",", "2"]], "}"]]]]], RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["gg", "2"], ",", SubscriptBox["gg", "3"]]], "}"]]]], "]"]]]]]], "-", RowBox[List[FractionBox["1", "4"], " ", SubsuperscriptBox["gg", "2", "2"], " ", RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["gg", "2"], ",", SubscriptBox["gg", "3"]]], "}"]]]], "]"]]]], "-", RowBox[List[FractionBox["3", "16"], " ", SubscriptBox["gg", "2"], " ", SubscriptBox["gg", "3"], " ", SuperscriptBox["z", "2"], " ", RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["gg", "2"], ",", SubscriptBox["gg", "3"]]], "}"]]]], "]"]]]], "+", RowBox[List[FractionBox["1", "4"], " ", SubsuperscriptBox["gg", "2", "2"], " ", "z", " ", RowBox[List[SubscriptBox["\[PartialD]", RowBox[List["z"]]], RowBox[List["WeierstrassSigma", "[", RowBox[List["z", ",", RowBox[List["{", RowBox[List[SubscriptBox["gg", "2"], ",", SubscriptBox["gg", "3"]]], "}"]]]], "]"]]]]]]]]]]]]  |  
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   Date Added to functions.wolfram.com (modification date)
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