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The Algebraic Theory of Semigroups, Volume I
The material in this volume was presented in a second-year graduate course at Tulane University, during the academic year 1958-1959. The book aims at being largely self-contained, but it is assumed that the reader has some familiarity with sets, mappings, groups, and lattices. Only in Chapter 5 will more preliminary knowledge be required, and even there the classical definitions and theorems on the matrix representations of algebras and groups are summarized.
Mathematics across the Iron Curtain
The theory of semigroups is a relatively young branch of mathematics, with most of the major results having appeared after the Second World War. This book describes the evolution of (algebraic) semigroup theory from its earliest origins to the establishment of a full-fledged theory. Semigroup theory might be termed `Cold War mathematics' because of the time during which it developed. There were thriving schools on both sides of the Iron Curtain, although the two sides were not always able to communicate with each other, or even gain access to the other's publications. A major theme of this book is the comparison of the approaches to the subject of mathematicians in East and West, and the study of the extent to which contact between the two sides was possible.
Hearings
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Space Medicine Research
Committee Serial No. 12. Reviews space medicine research operations and objectives of NASA, Army, Navy, and Air Force.
Cliff Preston Channels the Echo
Cliff Preston began channeling The Echo, a group of timeless, discarnate entities, in the late 1970s to fulfill a need to help others with life's problems. Third of 3 books about Cliff and Linda Preston, Canada's ordinary extraordinary psychic couple.Book 3 reveals underwater recovery diving, more psychic experiences such as Linda's encounter with Jesus, and more original messages from The Echo. Channeling, which is older than the Bible, has become of great public interest since Edgar Cayce, in the early 1900s.
Songs of Life and Grace
On a muggy, late August afternoon in 1936, somewhere along the banks of Greasy Creek, Life found Grace -- walking the dusty mile between work and home in a brand new pair of leather kitten-heeled pumps, blond curls bouncing in the sun. Two weeks later, Lifie Jay Preston and Grace Mollette married, a union that lasted until their deaths fifty-eight years later. There was something about them, their daughter Linda would discover, a kind of radiance and love of living that would mark them in the memories of every person they encountered -- a song that resonates years after their passing. Songs of Life and Grace is their story, told by the daughter whose own life grew out of their loving ministr...
Hearings
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Eyes Have Seen Ears Have Heard
This book contains deep thoughts expressed in poetry, prose and writings by Clifford Leon Sheffield who introduces his nephew Preston Sheffield to the literary world. Preston like his uncle shows an ability to investigate and dive deep into the subjects he addresses.
