Differential geometry has become one of the most active areas of math publishing, yet a small list of older, unofficial classics continues to interest the contemporary generation of mathematicians and students. This advanced treatment of topics in differential geometry, first published in 1957, was praised as "well written" by The American Mathematical Monthly and hailed as "undoubtedly a valuable addition to the literature." Its topics include: • Spaces with a non-vanishing curvature tensor that admit a group of automorphisms of the maximum order • Groups of transformations in generalized spaces • The study of global properties of the groups of motions in a compact orientable Riemannian space • Lie derivatives in an almost complex space For advanced undergraduates and graduate students in mathematics
Kogami Kii's life has been a living nightmare, as Tokyo is devastated by the savage attack of the magical girls. Yet all this fades away as Kii and friends suddenly awaken in a peaceful world-ten years in the past! Out of place and time, Kii and his companions struggle to adjust to a seemingly ordinary, everyday life, while wondering why they were sent to the past in the first place, and if they're stuck there permanently.
Kii and his group are still reeling from Himeji's immense power, suffering overwhelming defeat in their last confrontation. Unable to refuse, Himeji takes Kii and Tsukune into the future, to the time just before the Magical Girls were first sent into the past! Could what they learn here be the key to stopping the Magical Girl Apocalypse, or the first steps to starting it...?
Amidst the devastation of a post-magical girl world, Kogami Kii and his companions find themselves crossing paths at the university hospital. Seriously injured, Akuta hatches a plan to eliminate all of the magical girls at once, but it will take a lot of luck and a little time travel. Meanwhile, Kii awakens to find a mysterious letter in his hand and a gift that will shake the world to its core. Blood will be spilled as a final confrontation between Akuta, Kii and Tsukune's alternative personality, Asuka, draws near. Is there any chance of a “happy ending” for Kii and his friends in this hopeless world?
Differential geometry has become one of the most active areas of math publishing, yet a small list of older, unofficial classics continues to interest the contemporary generation of mathematicians and students. This advanced treatment of topics in differential geometry, first published in 1957, was praised as "well written" by The American Mathematical Monthly and hailed as "undoubtedly a valuable addition to the literature." Its topics include: • Spaces with a non-vanishing curvature tensor that admit a group of automorphisms of the maximum order • Groups of transformations in generalized spaces • The study of global properties of the groups of motions in a compact orientable Riemannian space • Lie derivatives in an almost complex space For advanced undergraduates and graduate students in mathematics
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