MathieuCharacteristicB[-r, -q] == MathieuCharacteristicB[r, q]

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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> <msub> <semantics> <mi> b </mi> <annotation-xml encoding='MathML-Content'> <ci> MathieuCharacteristicB </ci> </annotation-xml> </semantics> <mrow> <mo> - </mo> <mi> r </mi> </mrow> </msub> <mo> ( </mo> <mrow> <mo> - </mo> <mi> q </mi> </mrow> <mo> ) </mo> </mrow> <mo> &#10869; </mo> <mrow> <msub> <semantics> <mi> b </mi> <annotation-xml encoding='MathML-Content'> <ci> MathieuCharacteristicB </ci> </annotation-xml> </semantics> <mi> r </mi> </msub> <mo> ( </mo> <mi> q </mi> <mo> ) </mo> </mrow> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <ci> MathieuCharacteristicB </ci> <apply> <times /> <cn type='integer'> -1 </cn> <ci> r </ci> </apply> <apply> <times /> <cn type='integer'> -1 </cn> <ci> q </ci> </apply> </apply> <apply> <ci> MathieuCharacteristicB </ci> <ci> r </ci> <ci> q </ci> </apply> </apply> </annotation-xml> </semantics> </math>

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2001-10-29