"These articles which are written by leading experts make interesting reading and also give the non expert reader an idea of the subject. In addition there is an extensive index covering the entire volume and a glossary of important notions. In particular readers who are not specialists in the field may find this very helpful." ---Monatshefte fur Mathematik

• Diophantine equations: progress and problems.- Rational points and analytic number theory.- Weak approximation on algebraic varieties.- Counting points on varieties using universal torsors.- The Cox ring of a Del Pezzo surface.- Counting rational points on threefolds.- Remarques sur l’approximation faible sur un corps de fonctions d’une variable.- K3 surfaces over number fields with geometric Picard number one.- Jumps in Mordell-Weil rank and Arithmetic Surjectivity.- Universal torsors and Cox rings.- Random diophantine equations.- Descent on simply connected surfaces over algebraic number fields.- Rational points on compactifications of semi-simple groups of rank 1.- Weak Approximation on Del Pezzo surfaces of degree 4.- Transcendental Brauer-Manin obstruction on a pencil of elliptic curves.

"These articles which are written by leading experts make interesting reading and also give the non expert reader an idea of the subject. In addition there is an extensive index covering the entire volume and a glossary of important notions. In particular readers who are not specialists in the field may find this very helpful." ---Monatshefte fur Mathematik

• Diophantine equations: progress and problems.- Rational points and analytic number theory.- Weak approximation on algebraic varieties.- Counting points on varieties using universal torsors.- The Cox ring of a Del Pezzo surface.- Counting rational points on threefolds.- Remarques sur l’approximation faible sur un corps de fonctions d’une variable.- K3 surfaces over number fields with geometric Picard number one.- Jumps in Mordell-Weil rank and Arithmetic Surjectivity.- Universal torsors and Cox rings.- Random diophantine equations.- Descent on simply connected surfaces over algebraic number fields.- Rational points on compactifications of semi-simple groups of rank 1.- Weak Approximation on Del Pezzo surfaces of degree 4.- Transcendental Brauer-Manin obstruction on a pencil of elliptic curves.

"These articles which are written by leading experts make interesting reading and also give the non expert reader an idea of the subject. In addition there is an extensive index covering the entire volume and a glossary of important notions. In particular readers who are not specialists in the field may find this very helpful." ---Monatshefte fur Mathematik

• Diophantine equations: progress and problems.- Rational points and analytic number theory.- Weak approximation on algebraic varieties.- Counting points on varieties using universal torsors.- The Cox ring of a Del Pezzo surface.- Counting rational points on threefolds.- Remarques sur l’approximation faible sur un corps de fonctions d’une variable.- K3 surfaces over number fields with geometric Picard number one.- Jumps in Mordell-Weil rank and Arithmetic Surjectivity.- Universal torsors and Cox rings.- Random diophantine equations.- Descent on simply connected surfaces over algebraic number fields.- Rational points on compactifications of semi-simple groups of rank 1.- Weak Approximation on Del Pezzo surfaces of degree 4.- Transcendental Brauer-Manin obstruction on a pencil of elliptic curves.