D. Zuddas

collaborators

3 papers

math.GT2026

Branched coverings of simply connected $4$ -manifolds

Valentina Bais, Riccardo Piergallini, Daniele Zuddas

We show that, given $d \geq 4$ and two closed connected oriented PL $4$ -manifolds $M$ and $N$ such that $N$ has a handle decomposition with no $1$ - and $3$ -handles, there exists a…

math.GT2026

Branched covering representation of non-orientable $4$ -manifolds

Valentina Bais, Riccardo Piergallini, Daniele Zuddas

We show that every closed connected non-orientable PL $4$ -manifold $X$ is a simple branched covering of $\RP^4$. We also show that $X$ is a simple branched covering of the twisted…

math.GT2024

Some examples of small irreducible exotic 4-manifolds with free abelian fundamental group

Valentina Bais, Rafael Torres, Daniele Zuddas

We produce examples of pairwise non-diffeomorphic closed irreducible 4-manifolds with non-trivial free abelian fundamental group of rank less than three and small Euler characteris…

Branched coverings of simply connected 4-manifolds

Branched covering representation of non-orientable 4-manifolds

Some examples of small irreducible exotic 4-manifolds with free abelian fundamental group

Branched coverings of simply connected $4$ -manifolds

Branched covering representation of non-orientable $4$ -manifolds