#### Filter Results:

- Full text PDF available (2)

#### Publication Year

1993

2008

- This year (0)
- Last 5 years (0)
- Last 10 years (4)

#### Publication Type

#### Co-author

#### Journals and Conferences

Learn More

- M. Salvetti
- 2007

In [DP03], [Ra02] it was proven that the complement to a hyperplane arrangement in C is a minimal space, i.e. it has the homotopy type of a CW -complex with exactly as many i-cells as the i-th Betti number bi. The arguments use (relative) Morse theory and Lefschetz type theorems. This result of ”existence” was refined in the case of complexified real… (More)

We consider two natural embeddings between Artin groups: the group GÃn−1 of type Ãn−1 embeds into the group GBn of type Bn ; GBn in turn embeds into the classical braid group Brn+1 := GAn of type An . The cohomologies of these groups are related, by standard results, in a precise way. By using techniques developed in previous papers, we give precise… (More)

- Mario Salvetti
- Discrete Mathematics
- 1993

- Davide Moroni, Mario Salvetti, Ovidio Salvetti
- MDA
- 2008

- Mario Salvetti, Fabio Stumbo
- Discrete Mathematics
- 1997

First we remark that the cellular complex constructed by Salvetti (1994) can be considered as a 'topological' invariant of a graph, so its cohomology is also an invariant. We use the construction of Salvetti (1994) to calculate the cohomology of the Artin group associated to the complete graph Kn, using coefficients in a local system over Z[q, qt]. The… (More)

- Davide Moroni, Sara Colantonio, Ovidio Salvetti, Mario Salvetti
- VISAPP
- 2007

- ‹
- 1
- ›