Some exact sequences of modules over the Steenrod algebra
نویسندگان
چکیده
منابع مشابه
Unstable modules over the Steenrod algebra revisited
A new and natural description of the category of unstable modules over the Steenrod algebra as a category of comodules over a bialgebra is given; the theory extends and unifies the work of Carlsson, Kuhn, Lannes, Miller, Schwartz, Zarati and others. Related categories of comodules are studied, which shed light upon the structure of the category of unstable modules at odd primes. In particular, ...
متن کاملA Classification of Polynomial Algebras as Modules over the Steenrod Algebra
Suppose that A2 is the mod-2 Steenrod algebra, and that R = F2[x1, . . . , xn] is the polynomial ring in n variables over the prime field F2. Campbell and Selick [3] observed that the equations Sqxi = x 2 i−1 for 2≤ i≤ n, and Sqx1 = x 2 n, define an action of A2 on R that makes R isomorphic as an A2-module to the A2-module defined by the standard action on R. In that paper, they also pose the f...
متن کاملTruncated Polynomial Algebras over the Steenrod Algebra
MOHAMED ALI It is shown that the classification of polynomial algebras over the mod p Steenrod algebra is an essentially different problem from the classification of polynomial algebras truncated at height greater than p over the Steenrod algebra . 0 . Introduction . Let B = Zp[y2n y2n2, . . . , y2n,] be a polynomial algebra over A(p), the mod p Steenrod algebra, where yen ; has dimension 2ni a...
متن کاملRealizing Coalgebras over the Steenrod Algebra
We describe algebraic obstruction theories for realizing an abstract (co)algebra K∗ over the mod p Steenrod algebra as the (co)homology of a topological space, and for distinguishing between the p-homotopy types of different realizations. The theories are expressed in terms of the Quillen cohomology of K∗.
متن کاملPolynomial Modules over the Steenrod Algebra and Conjugation in the Milnor Basis
Let Ps = F2 [x1, . . . , xs] be the mod 2 cohomology of the s-fold product of RP∞ with the usual structure as a module over the Steenrod algebra. A monomial in Ps is said to be hit if it is in the image of the action A ⊗ Ps → Ps where A is the augmentation ideal of A. We extend a result of Wood to determine a new family of hit monomials in Ps. We then use similar methods to obtain a generalizat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hiroshima Mathematical Journal
سال: 1971
ISSN: 0018-2079
DOI: 10.32917/hmj/1206138143