TY - BOOK AU - Roytvarf,Alexander A. TI - Thinking in problems: how mathematicians find creative solutions / Alexander A. Roytvarf SN - 9780817684051 (alk. paper) AV - QA9 .R777 2013 U1 - 370.152 22 PY - 2013/// CY - New York PB - Birkhauser KW - Mathematics KW - Philosophy KW - Mathematical analysis KW - Reasoning KW - Logic ER -