A.L. Gorodentsev is professor at the Independent University of Moscow and at the Faculty of Mathematics at the National Research University "Higher School of Economics".

He is working in the field of algebraic and symplectic geometry, homological algebra and representation theory connected with geometry of algebraic and symplectic varieties.

He is one of the first developers of the "Helix Theory" and semiorthogonal decomposition technique for studying the derived categories of coherent sheaves.

Challenging amount of material thoughtfully organized for deep and fast learning

Large collection of exercises equipped with hints and a lot of problems for independent solution

Simple modern explanation of subjects usually omitted in basic courses, such as representations of the symmetric group, geometry of algebraic varieties, meaty aspects of the category theory etc

Includes supplementary material: [...]

Notations and Abbreviations.- 1 Set-Theoretic and Combinatorial Background.- 2 Integers and Residues.- 3 Polynomials and Simple Field Extensions.- 4 Elementary Functions and Power Series Expansions.- 5 Ideals, Quotient Rings, and Factorization.- 6 Vectors.- 7 Duality.- 8 Matrices.- 9 Determinants.- 10 Euclidean Spaces.- 11 Projective Spaces.- 12 Groups.- 13 Description of Groups.- 14 Modules over a Principal Ideal Domain.- 15 Linear Operators.- 16 Bilinear Forms.- 17 Quadratic Forms and Quadrics.- 18 Real Versus Complex.- 19 Hermitian Spaces.- 20 Quaternions and Spinors.- References.- Hints to Selected Exercises.- Index.