## Search

Now showing items 51-60 of 85

#### On the skeleton of the metric polytope

(2001)

We consider convex polyhedra with applications to well-known combinatorial optimization problems: the metric polytope m n and its relatives. For n ≤ 6 the description of the metric polytope is easy as m n has at most 544 ...

#### On computing Hilbert bases via the Elliot–MacMahon algorithm

(2001)

The ways of using the Elliot–MacMahon algorithm to compute the Hilbert base of a system of linear Diophantine equations known so far are either not efficient or can fail to terminate. We present a version of an algorithm ...

#### Extended F4-buildings and the baby monster

(2001)

Let Θ be the Baby Monster graph which is the graph on the set of {3, 4}-transpositions in the Baby Monster group B in which two such transpositions are adjacent if their product is a central involution in B. Then Θ is ...

#### On equicut graphs

(2001)

The size sz(Γ) of an ℓ1-graph Γ = (V, E) is the minimum of nf/tf over all the possible ℓ1-embeddings f into nf -dimensional hypercube with scale tf. The sum of distances between all the pairs of vertices of Γ is at most ...

#### On the continuum limit of fermionic topological charge in lattice gauge theory

(2001)

It is proved that the fermionic topological charge of SU(N) lattice gauge fields on the four-torus, given in terms of a spectral flow of the Hermitian Wilson–Dirac operator or, equivalently, as the index of the overlap ...

#### Houses of Mendicant Orders in the Venetian Messenia: the documentary evidence until 1500 (Case di ordini mendicanti nella Messenia veneziana: testimonianze documentarie fino al 1500)

(2001)

The paper presents the documentary evidence to identify and locate the houses of the Mendicant Orders in Venetian Messenia (nowadays the Municipality of Pylos-Nestoras in Southern Peloponnese, Greece) between 13th and 15th ...

#### Effect of phase breaking on ac transport through a quantum dot dimer

(2001)

The ac response of a coupled double quantum dot system involving a phase-breaking effect is studied. We calculate the ac conductance based on the nonequilibrium Green’s-function formalism. Some parasitic and gate capacitances ...

#### Observation of bound states of solitons in a passively mode-locked fiber laser

(2001)

We report on an experimental observation of bound states of solitons in a passively mode-locked fiber soliton ring laser. The observed bound solitons are stable and have discrete, fixed soliton separations that are independent ...

#### Thermal flow sensor for ultra-low velocities based on printed circuit board technology

(2001)

This paper presents a new thermal flow sensor for ultra-low velocities. The sensor was fabricated with the standard printed circuit board (PCB) technology. The technology and the simple sensor design would reduce costs in ...

#### An adaptive audio watermarking system

(2001)

An adaptive and content-based audio watermarking system based on echo hiding is presented. The proposed system aims to overcome the problems of audible echoes in a simple echo hiding approach. Audibility of echoes is reduced ...