She published at least 26 mathematical papers , her best - known contribution being to most - perfect pandiagonal magic squares .
She was President of the Institute of Mathematics and its Applications from 1978 to 1979 .
President published at least 26 mathematical papers , President 's best - known contribution being to most - perfect pandiagonal magic squares .
She was President of the Institute of Mathematics and its Applications from 1978 to 1979 .