In the second installment of the Young Prince series, follow T'Challa in an action-packed adventure as he tries to unravel a sinister plot

The third and final instalment in this thrilling trilogy, following T'Challa through his early years before he becomes the Wakandan hero, Black Panther

A gripping, richly imagined fantasy set in an alternate ancient African world in which a Black girl finds her power and saves her people from evil, by the Coretta Scott King/John Steptoe New Talent Award-winning author of Black Panther: The Young Prince. In the land of Alkebulan, twelve-year-old Asha is an orphan, raised by Madame S, the proprietor of a traveling carnival. When Madame S is attacked by ghoulish creatures, she manages to tell Asha before she dies, "Seek the Underground Kingdom, where the black flowers bloom." Asha doesn't understand the mysterious words, but they launch her onto a page-turning quest to protect her people and stop an ancient evil. Along the way, she uncovers shocking secrets about the family she never knew and begins to find her place in the world as she discovers her own untapped powers.

Matrix positivity is a central topic in matrix theory: properties that generalize the notion of positivity to matrices arose from a large variety of applications, and many have also taken on notable theoretical significance, either because they are natural or unifying. This is the first book to provide a comprehensive and up-to-date reference of important material on matrix positivity classes, their properties, and their relations. The matrix classes emphasized in this book include the classes of semipositive matrices, P-matrices, inverse M-matrices, and copositive matrices. This self-contained reference will be useful to a large variety of mathematicians, engineers, and social scientists, as well as graduate students. The generalizations of positivity and the connections observed provide a unique perspective, along with theoretical insight into applications and future challenges. Direct applications can be found in data analysis, differential equations, mathematical programming, computational complexity, models of the economy, population biology, dynamical systems and control theory.

Twelve year old Hoodoo Hatcher was born into a family with a rich tradition of practicing folk magic - hoodoo, as most people call it. But even though his name is Hoodoo, he can't seem to cast a simple spell. Then a mysterious man called the Stranger comes to town, and Hoodoo starts dreaming of the dead rising from their graves. Even worse, he soon learns the Stranger is looking for a boy. Not just any boy. A boy named Hoodoo. The entire town is at risk from the Stranger's black magic, and only Hoodoo can defeat him. He'll just need to learn how to conjure first.

To stop an ancient evil, a young T'Challa must take on the mantle of hero, setting him on the path to becoming the Black Panther

Soon she is plunged into the dark world of Victorian London's supernatural underbelly and learns that the city is under attack by ghouls, monsters, and spirit summoners. Can Jess fight these powerful forces? And will the group of strange children with mysterious powers she befriends be able to help? As shy, proper Jess transforms into a brave warrior, she uncovers terrifying truths about the hidden battle between good and evil, about her family, and about herself.

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.