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7 - Unstable Adams spectral sequence charts

Published online by Cambridge University Press:  18 January 2010

Nigel Ray
Affiliation:
University of Manchester
Grant Walker
Affiliation:
University of Manchester
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Summary

Abstract. We present charts for the E2 term of the unstable Adams spectral sequence for π*Sn, complete out to the 60-stem, for 3 ≤ n ≤ 25 at the prime 2, and complete out to the 81-stem for 3 ≤ n ≤ 15 at the prime 3. The charts are produced from the computer calculations of Curtis, et al [2], extended by Mahowald [4] (p=2) and Tangora [6] (p=3), using a EC language program to convert the Lambda algebra files into LaTEX typesetting code.

The purpose of this paper is to present the computer calculations of the unstable Adams spectral sequences for spheres of Curtis, et al [2] (extended by Mahowald [4]) and Tangora [6] in the conventional (ts, s) chart presentation, thereby making these results more accessible to homotopy theorists. The main tool is a C language program which inputs the ASCII files of Lambda algebra calculations and has as its output ASCII files written in the LaTEX typesetting code ([3]).

The Unstable Adams spectral sequence (UASS) converges to the p-component of the homotopy groups of the n-sphere, Sn. The E2 term of the UASS can be calculated by homological algebra techniques, using [1], where it was shown that the E2 term of the classical Adams spectral sequence (clASS) converging to the p-component of the stable homotopy groups of spheres, φ*, S0, is isomorphic to the homology of the differential graded algebra Λ.

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Publisher: Cambridge University Press
Print publication year: 1992

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