N. Chbili

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3 papers · 1 filter

math.GT2004

The Casson-Walker-Lescop invariant of periodic three-manifolds

Nafaa Chbili

Let $p$ be an odd prime and $G$ the finite cyclic group of order $p$ . We use the Casson-Walker-Lescop invariant to find a necessary condition for a three-manifold to have an action…

math.GT2003

Quantum invariants and finite group actions on three-manifolds

Nafaa Chbili

A 3-manifold $M$ is said to be $p$ -periodic ( $p \geq 2$ an integer) if and only if the finite cyclic group of order $p$ acts on $M$ with a circle as the set of fixed points. This pa…

math.GT2003

A new criterion for knots with free periods

Nafaa Chbili

Let $p \geq 2$ and $q \neq = 0$ an integer. A knot $K$ in the three-sphere is said to be a $(p, q)$ -lens knot if and only if it covers a link in the lens space $L (p, q)$ . In this paper,…