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This carefully prepared manuscript presents elimination theory in weighted projective spaces over arbitrary noetherian commutative base rings. Elimination theory is a classical topic in commutative algebra and algebraic geometry, and it has become of renewed importance recently in the context of applied and computational algebra. This monograph provides a valuable complement to sparse elimination theory in that it presents in careful detail the algebraic difficulties from working over general base rings. This is essential for applications in arithmetic geometry and many other places. Necessary tools concerning monoids of weights, generic polynomials and regular sequences are treated independently in the first part of the book. Many supplements added to each chapter provide extra details and insightful examples. Necessary tools concerning monoids of weights, generic polynomials and regular sequences are treated independently in the first part of the book. Many supplements added to each chapter provide extra details and insightful examples.
This carefully prepared manuscript presents elimination theory in weighted projective spaces over arbitrary noetherian commutative base rings. Elimination theory is a classical topic in commutative algebra and algebraic geometry, and it has become of renewed importance recently in the context of applied and computational algebra. This monograph provides a valuable complement to sparse elimination theory in that it presents in careful detail the algebraic difficulties from working over general base rings. This is essential for applications in arithmetic geometry and many other places. Necessary tools concerning monoids of weights, generic polynomials and regular sequences are treated independently in the first part of the book. Many supplements added to each chapter provide extra details and insightful examples. Necessary tools concerning monoids of weights, generic polynomials and regular sequences are treated independently in the first part of the book. Many supplements added to each chapter provide extra details and insightful examples.
Das "Lehrbuch der Algebra" dient der Einfiihrung in die Algebra, einschliefi- lich derjenigen Teile der Algebra, die gemeinhin als Lineare Algebra bezeich- net werden. Mit dem zweiten Band legen wir nunmehr den Hauptteil des Buches vor. Den Studierenden werden zunachst die drei mittleren Kapitel VIII, IX und X interessieren, die Lineare Operatoren, Dualitat und Multilineare Algebra behandeln und damit den Stoff vermitteln, der den Kern der Anfanger- Vorlesungen iiber (Lineare) Algebra und Geometrie ausmacht und in weitem Mafie auch in den parallelen Analysis-Vorlesungen gebraucht wird. Zur Untersuchung linearer Operatoren in Kapitel VIII sind einige Ergeb- nisse iiber Polynomringe notig, die in Kapitel VII, welches allgemeine Be- griffe der Kommutativen Algebra vorstellt, enthalten sind, wenn sie auch nur einen gering en Teil dieses Kapitels bilden, den der Leser aber an Hand kurzer Bemerkungen zu Beginn der einzelnen Paragraphen unschwer her- ausfinden wird. Dem Leser sei geraten, sich hier anfangs auf das Notige zu beschranken. Weiter empfehlen wir dem Leser, sich friihzeitig mit dem Tensorprodukt als dem Grundbegriff multilinearer Algebra vertraut zu machen; hierzu bieten schon einige Stellen der Kapitel VIII und IX Gelegenheit. Systematisch wird das Tensorprodukt erst in Kapitel X besprochen, jedoch ergeben die ersten Paragraphen 80 und 81 dieses Kapitels eine in sich geschlossene einfach gehaltene Einfiihrung, die man leicht vorziehen kann. Die Paragraphen 80 und 84 konnen librigens ohne wei teres als Teil des Kapitels VI liber Determinanten in den erst en Band aufgenommen werden.
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