Yuchen Yang@yyc1991PhD in MathematicsFollow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceyyc1991 has not updated employment details yet.Educationyyc1991 has not updated education details yet.Linksyyc1991 has not updated links details yet. Skillsyyc1991 has not updated skills details yet.