Noether's Theorems
The book provides a detailed exposition of the calculus of variations on fibre bundles and graded manifolds. It presents applications in such area's as non-relativistic mechanics, gauge theory, gravitation theory and topological field theory with ...
Brother's Keeper
Two children must escape North Korea on their own in this harrowing novel based on a true story. North Korea. December, 1950. Twelve-year-old Sora and her family live under an iron set of rules: No travel without a permit. No criticism of t...
Brother's Keeper
With war looming on the horizon and winter setting in, can two children escape North Korea on their own? Winner of the Freeman Book Award North Korea. December, 1950. Twelve-year-old Sora and her family live under an iron set of rules: No travel without a permit. No criticism of the government. No absences from Communist meetings. Wear red. Hang pictures of the Great Leader. Don't trust your neighbors. Don't speak your mind. You are being watched. But war is coming, war between North and South Korea, between the Soviets and the Americans. War causes chaos--and war is the perfect time to escape. The plan is simple: Sora and her family will walk hundreds of miles to the South Korean city of Busan from their tiny mountain village. They just need to avoid napalm, frostbite, border guards, and enemy soldiers. But they can't. And when an incendiary bombing changes everything, Sora and her little brother Young will have to get to Busan on their own. Can a twelve-year-old girl and her
Brother's Ruin
The year is 1850 and Great Britain is flourishing, thanks to the Royal Society of the Esoteric Arts. When a new mage is discovered, Royal Society elites descend like buzzards to snatch up a new apprentice. Talented mages are bought from their families at a tremendous price, while weak mages are snapped up for a pittance. For a lower middle class family like the Gunns, the loss of a son can be disastrous, so when seemingly magical incidents begin cropping up at home, they fear for their Archie's life and their own livelihoods. But Archie Gunn isn't a talented mage. His sister Charlotte is, and to prevent her brother from being imprisoned for false reporting she combines her powers with his to make him seem a better prospect. However, maintaining the charade will mean masquerading as Archie's assistant, and delaying or destroying her own plans for marriage. When she discovers a nefarious plot by the sinister Doctor Ledbetter, Charlotte must use all her cunning and guile to protect her
Grettir's Saga
'You will be made an outlaw, forced always to live in the wilds and to live alone.' A sweeping epic of the Viking Age, Grettir's Saga follows the life of the outlaw Grettir the Strong as he battles against sorcery, bad luck, and the vengefulness o...
Brother's Journey
The story of Dave Pelzer is a legend of our times: the shattering tale of the child called 'It' who was forced to live in the basement. His mother was the perpetrator of the horror, but she had a willing accomplice. It was Dave's brother Richard -...
