Ma. Louise Antonette N. De Las Peñas is a Professor at the Department of Mathematics and Associate Dean for Research and Creative Work, Ateneo De Manila University, Philippines. Her research interests are group theory, discrete geometry, mathematical crystallography and technology in mathematics education. 

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She obtained her Phd, MS and BS Mathematics degrees from the University of the Philippines-Diliman, Quezon City. She went to Sophia University, Japan for postdoctoral studies in area of representation theory. 

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She has published her research extensively in international and national science citation indexed journals, and international conference publications. She is a recipient of several research awards including the National Research Council of the Philippines (NRCP) Achievement Award in the Mathematical Sciences, Philippine Commission on Higher Education Republica National Research Award and a number of her published articles have been given recognition by the National Academy of Science and Technology (NAST) as outstanding papers. Over the years, she has supervised as thesis adviser at least 37 graduate students, in Phd and MS Mathematics, and MS in Teaching Mathematics.

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Prof. De Las Peñas is an Executive Member of the International Union of Crystallography (IUCR) Mathematical and Theoretical Commission, International Program Committee Member of the Asian Technology Conference in Mathematics (ATCM).

She is currently the column editor of the Math Tourist of the journal The Mathematical Intelligencer and member of the Editorial Board of the Electronic Journal of Mathematics and Technology (EJMT).