Félix, Yves Espaces formels et \(\pi\) -formels. (French) Zbl 0546.55013 Homotopie algébrique et algèbre locale, Journ. Luminy/France 1982, Astérisque 113-114, 96-108 (1984). Summary: [For the entire collection see Zbl 0535.00017.] Summary and synthesis of the theory of formal and \(\pi\) -formal spaces: Definition and properties, obstructions to formality and study of spaces with Poincaré duality are the three main aspects of this lecture. Cited in 2 Documents MSC: 55P62 Rational homotopy theory 55M05 Duality in algebraic topology 57P10 Poincaré duality spaces 17B70 Graded Lie (super)algebras 13N05 Modules of differentials 16W50 Graded rings and modules (associative rings and algebras) Keywords:formal and \(\pi\) -formal spaces; obstructions to formality; spaces with Poincaré duality Citations:Zbl 0535.00017 × Cite Format Result Cite Review PDF