Rings and Fields (lectures)

Emmy Noether
quadratic integers
Equivalence class
quotient ring
Date Topic Read Links
2026.01.05 Induction
2026.01.06 Peano arithmetic §1.1 notes01
2026.01.08 Well-ordering principle §1.1 problems01
2026.01.12 Equivalence relations §2.1
2026.01.13 Negative integers §1.2 notes02
2026.01.15 Division with remainder §1.3 problems02
2026.01.19 Euclidean algorithm §1.4
2026.01.20 Congruence §2.2 notes03
2026.01.22 Modular arithmetic §2.3–2.4 problems03
2026.01.26 Fermat's little theorem §2.5
2026.01.27 Rings §3.1–3.2 notes04
2026.01.29 Subrings §4.2 problems04
2026.02.02 Domains and fields §3.3
2026.02.03 Polynomials §7.1 notes05
2026.02.05 Roots §7.2 problems05
2026.02.09 Ring homomorphisms §4.3
2026.02.10 Ideals §5.1–5.2 notes06
2026.02.10 Midterm
2026.02.12 Quotient rings §5.3–5.4 problems06
Winter break
2026.02.23 Isomorphisms §4.4
2026.02.24 First isomorphism theorem §5.5 notes07
2026.02.26 Ideals in a quotient §5.7 problems07
2026.03.02 Direct decomposition of a ring §5.6
2026.03.03 Rings of fractions §6.5 notes08
2026.03.05 Recognizing fields §13.1 problems08
2026.03.09 Prime ideals §6.1
2026.03.10 Euclidean domains §6.3 notes09
2026.03.12 Extended Euclidean algorithm problems09
2026.03.16 Principal ideal domains §6.2
2026.03.17 Unique factorization domains §6.4 notes10
2026.03.19 Non-Euclidean principal ideal domains problems10
2026.03.23 Factoring polynomials §7.3
2026.03.24 Irreducibility criteria §7.4 notes11
2026.03.26 Counting irreducibles §7.5 problems11
2026.03.30 Gaussian primes §10.4
2026.03.31 Sums of two squares §10.4 notes12
2026.04.02 Review problems12
2026.04.?? Extra tutorial (in 201 Jeffery Hall) TBD
2026.04.?? Exam TBD