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2020 Faculty Courses School of Science Department of Mathematics Graduate major in Mathematics

Advanced topics in Algebra G

Academic unit or major
Graduate major in Mathematics
Instructor(s)
Shane Kelly
Class Format
Lecture (Zoom)
Media-enhanced courses
-
Day of week/Period
(Classrooms)
5-6 Mon (Zoom)
Class
-
Course Code
MTH.A503
Number of credits
100
Course offered
2020
Offered quarter
3Q
Syllabus updated
Jul 10, 2025
Language
English

Syllabus

Course overview and goals

Motivated by Weil's beautiful conjectures on zeta functions counting points on varieties over finite fields, étale cohomology is a theory generalising singular cohomology of complex algebraic varieties. In the first half we give an introduction to the classical theory of étale cohomology. In the second half, we will discuss Bhatt-Scholze's pro-étale topology. For more information see: http://www.math.titech.ac.jp/~shanekelly/EtaleCohomology2020WS.html

Course description and aims

(1) Obtain overall knowledge on basics in étale cohomology
(2) Understand the relationship between étale topology and Galois theory
(3) Attain understanding of possible applications of étale topology

Keywords

Étale cohomology, homological algebra, Galois theory

Competencies

  • Specialist skills
  • Intercultural skills
  • Communication skills
  • Critical thinking skills
  • Practical and/or problem-solving skills

Class flow

Standard lecture course

Course schedule/Objectives

Course schedule Objectives
Class 1 Introduction Details will be provided during each class session.
Class 2 Commutative Algebra I Details will be provided during each class session.
Class 3 Topology I Details will be provided during each class session.
Class 4 Homological Algebra I Details will be provided during each class session.
Class 5 Functoriality I Details will be provided during each class session.
Class 6 Étale cohomology I Details will be provided during each class session.
Class 7 Étale cohomology II Details will be provided during each class session.
Class 8 Galois theory I Details will be provided during each class session.

Study advice (preparation and review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.

Textbook(s)

None required

Reference books, course materials, etc.

Course materials are provided during class.

Evaluation methods and criteria

Learning achievement is evaluated by reports (100%).

Related courses

  • MTH.A301 : Algebra I
  • MTH.A302 : Algebra II
  • MTH.A331 : Algebra III

Prerequisites

Basic knowledge of scheme theory (e.g., Hartshorne)