La Classification Mathématique par matières 2000 Mathematics subject Classification 2000 Query : CC = 55N34 55-XX Algebraic topology 55N34 Elliptic cohomology [New MSC 2000 code] MSC 1991 codes in relation : 55N35, 55N20, 58G10, 58G12, 11F11 Keyword : Back to the Mathematics Subject Classification (version 2000)