Infosys Science Foundation Series Infosys Science Foundation Series in Mathematical Sciences
Series Editors
Irene Fonseca
Carnegie Mellon University, Pittsburgh, PA, USA
Gopal Prasad
University of Michigan, Ann Arbor, USA
Editorial Board
Manindra Agrawal
Indian Institute of Technology Kanpur, Kanpur, India
Weinan E
Princeton University, Princeton, USA
Chandrashekhar Khare
University of California, Los Angeles, USA
Mahan Mj
Tata Institute of Fundamental Research, Mumbai, India
Ritabrata Munshi
Tata Institute of Fundamental Research, Mumbai, India
S. R. S Varadhan
New York University, New York, USA
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Ramji Lal
Algebra 3
Homological Algebra and Its Applications
1st ed. 2021
Logo of the publisher
Ramji Lal
University of Allahabad, Prayagraj, Uttar Pradesh, India
ISSN 2363-6149 e-ISSN 2363-6157
Infosys Science Foundation Series
ISSN 2364-4036 e-ISSN 2364-4044
Infosys Science Foundation Series in Mathematical Sciences
ISBN 978-981-33-6325-0 e-ISBN 978-981-33-6326-7
https://doi.org/10.1007/978-981-33-6326-7
Springer Nature Singapore Pte Ltd. 2021
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Dedicated to the memory of
my father like brother
(Late) Sri Gopal Lal
Preface
Algebra has played a central and a decisive role in formulating and solving the problems in all branches of mathematics, science, and engineering. My earlier plan was to write a series of three volumes on algebra covering a wide spectrum to cater the need of students and researchers at various levels. The two initial volumes have already appeared. However, looking at the size and the contents to be covered, we decided to split the third volume into two volumes, Algebra 3 and Algebra 4. Algebra 3 concentrates on the homological algebra together with its important applications in mathematics, whereas Algebra 4 is about Lie algebras, Chevalley groups, and their representation theory.
Homological algebra has played and is playing a pivotal role in understanding and classifying (up to certain equivalences) the mathematical structures such as topological, geometrical, arithmetical, and the algebraic structures by associating computable algebraic invariants to these structures. Indeed, it has also shown its deep intrinsic presence in dealing with the problems in physics, in particular, in string theory and quantum theory. The present volume, Algebra 3, the third volume in the series, is devoted to introduce the homological methods and to have some of its important applications in geometry, topology, algebraic geometry, algebra, and representation theory. It contains category theory, abelian categories, and homology theory in abelian categories, the -fold extension functors , the torsion functors , the theory of derived functors, simplicial and singular homology theories with their applications, co-homology of groups, sheaf theory, sheaf co-homology, some amount of algebraic geometry, tale sheaf theory and co-homology, and the -adic co-homology with a demonstration showing its application in the representation theory. The book can act as a text for graduate and advance graduate students specializing in mathematics.