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1. CJM 1998 (vol 50 pp. 845)

Scheerer, H.; Tanré, D.
 Lusternik-Schnirelmann category and algebraic \$R\$-local homotopy theory In this paper, we define the notion of \$R_{\ast}\$-\$\LS\$ category associated to an increasing system of subrings of \$\Q\$ and we relate it to the usual \$\LS\$-category. We also relate it to the invariant introduced by F\'elix and Lemaire in tame homotopy theory, in which case we give a description in terms of Lie algebras and of cocommutative coalgebras, extending results of Lemaire-Sigrist and F\'elix-Halperin. Categories:55P50, 55P62

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