EntityQ5308032· pop 7· linked from 21 articlesWilliam JacoSign in to saveAmerican mathematicianConnectionsmathematicsEntitygeometryEntityInternational Standard Book NumberEntitytopologyEntitymathematicianEntityWayback MachineEntityDoctor of PhilosophyEntityUniversity of Wisconsin–MadisonEntityNational Academy of SciencesEntityRice UniversityEntityBachelor of ArtsEntityPennsylvania State UniversityEntityMathematics Genealogy ProjectEntityInstitute for Advanced StudyEntityAmerican Mathematical SocietyEntityGraftonEntityMaster of ArtsEntityAmerican Association for the Advancement of ScienceEntityKarol BorsukEntityPhi Beta Kappa SocietyEntityCategories1940 births20th-century American mathematicians21st-century American mathematiciansAmerican topologistsEducators from West VirginiaFairmont State University alumniFellows of the American Mathematical SocietyLiving peopleMathematicians from West VirginiaOklahoma State University facultyPennsylvania State University alumniPeople from Grafton, West Virginia