Abstract
Let R be a subring ring of Q. We reserve the symbol p for the least prime which is not a unit in R; if R ⊒Q, then p=∞. Denote by DGL np n , n≥1, the category of (n-1)-connected np-dimensional differential graded free Lie algebras over R. In [1] D. Anick has shown that there is a reasonable concept of homotopy in the category DGL np n . In this work we intend to answer the following two questions: Given an object (L(V), ϖ) in DGL 3n+2 n and denote by S(L(V), ϖ) the class of objects homotopy equivalent to (L(V), ϖ). How we can characterize a free dgl to belong to S(L(V), ϖ)? Fix an object (L(V), ϖ) in DGL 3n+2 n . How many homotopy equivalence classes of objects (L(W), δ) in DGL 3n+2 n such that H * (W, d′)≊H * (V, d) are there? Note that DGL 3n+2 n is a subcategory of DGL np n when p>3. Our tool to address this problem is the exact sequence of Whitehead associated with a free dgl.
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Benkhalifa, M., Abughzalah, N. On the homotopy type of (n-1)-connected (3n+1)-dimensional free chain Lie algebra. centr.eur.j.math. 3, 58–75 (2005). https://doi.org/10.2478/BF02475655
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DOI: https://doi.org/10.2478/BF02475655