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Vertex algebras are algebraic objects that encapsulate the concept of operator product expansion from two-dimensional conformal field theory. Vertex algebras are fast becoming ubiquitous in many areas of modern mathematics, with applications to representation theory, algebraic geometry, the theory of finite groups, modular functions, topology, integrable systems, and combinatorics. This book is an introduction to the theory of vertex algebras with a particular emphasis on the relationship...

The No.1 football series - over 1 million copies sold! Born and raised in Sheffield, Vardy brightens football matches with his versatility, precision and energy. His 2012 move to Leicester City allowed the striker to prove his thrilling goalscoring and hard-working personality, where he helped the team to win the Championship. Follow the exciting journey of this award-winning striker from Stocksbridge Park Steels to winning the Premier League in 2016 and shining on the international stage....

All Hal ever wanted was a dog - but a dog would damage the expensive carpets in his parents' glamorous home, and they refuse to consider one. That's until they discover Easy Pets, a dog-rental agency. Fleck the terrier arrives on Hal's birthday, and Hal is overjoyed. But when Hal discovers to his horror that his dog is to be returned, he runs away... along with a bunch of pedigree hounds, all joyfully escaping from Easy Pets! Soon Hal and his dogs - including Otto the wise St Bernard, and...