Journal of Topology · 2012 · 31 citations · 16 references
BP is an E4 ring spectrum. The E4 structure is unique up to automorphism.
16
Homotopy associativity of 𝐻-spaces. II
James Stasheff · Transactions of the American Mathematical Society · 1963 · 1.2K citations · Full text
The cyclotomic trace and algebraic K-theory of spaces
M. B�kstedt, W. C. Hsiang, Ib Madsen · Inventiones mathematicae · 1993 · 412 citations
A spectrum whose Zp cohomology is the algebra of reduced pth powers
Edgar H. Brown, Franklin P. Peterson · Topology · 1966 · 118 citations
The sigma orientation is an H ∞ map
Matthew Ando, Michael J. Hopkins, Neil Strickland · American Journal of Mathematics · 2004 · 69 citations · Full text