On the formality of equivariant classifying spaces.
On the foundations of Topology
On the functoriality of stratified desingularizations.
On the fundamental dimension of approximatively 1-connected compacta
On the fundamental dimension of the Cartesian product of compacta with the fundamental dimension 2
On the fundamental group of a mapping space. An example
On the fundamental group of a space of sections.
On the generalization of the Nielsen number
On the genus of finite CW-H-spaces
On the genus of free loop fibrations over -spaces.
On the genus of represenattion spheres.
On the geometric bar construction and the Brown representability theorem
On the geometry of free loop spaces.
On the geometry of polynomial mappings at infinity
We associate to a given polynomial map from to itself with nonvanishing Jacobian a variety whose homology or intersection homology describes the geometry of singularities at infinity of this map.
On the group of homotopy equivalences of simply connected five manifolds.
On the Groups JOGX. I.
On the groups of a sphere
In questo articolo studiamo i gruppi di una sfera e proviamo che il gruppo è isomorfo all'ennesimo gruppo di omotopia di , nell'ipotesi che sia una classe coconnessa di links ammissibili.
On the Growth of Homotopy Groups.
On the Holonomic Systems of Linear Differential Equations, II.
On the homological category of 3-manifolds.
Let M be a closed, connected, orientable 3-manifold. Denote by n(S1 x S2) the connected sum of n copies of S1 x S2. We prove that if the homological category of M is three then for some n ≥ 1, H*(M) is isomorphic (as a ring) to H*(n(S1 x S2)).