EntityQ1585833· pop 7· linked from 76 articlesHarold GradSign in to saveAmerican mathematician (1923–1986)ConnectionsGuggenheim FellowshipEntityNew York CityCityNew YorkEntityplasmaEntityelectrical engineeringEntitydigital object identifierEntityNew York UniversityEntitystatistical mechanicsEntityNational Academy of SciencesEntitymagnetohydrodynamicsEntityLyman SpitzerEntityRichard CourantEntityAmerican Physical SocietyEntityEugene ParkerEntityOak Ridge National LaboratoryEntityBoltzmann equationEntityCooper UnionEntityMathematical ReviewsEntityLiouville's theoremEntitydoctoral advisorEntityCategories1923 births1986 deaths20th-century American mathematiciansCooper Union alumniCourant Institute of Mathematical Sciences facultyMathematicians from New York CityMathematicians from New York (state)New York University alumni