Where did Dr. Roldan earn his Ph.D. and M.S. degrees?
Dr. Roldan earned his Ph.D. in applied mathematics and his M.S. in physics engineering from the KTH Royal Institute of Technology.
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Where did Dr. Roldan earn his Ph.D. and M.S. degrees?

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### Response:
Dr. Roldan earned his Ph.D. in applied mathematics and his M.S. in physics engineering from the KTH Royal Institute of Technology.<|im_end|>