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 solutions02
2026.01.20 Congruence §2.2 notes03
2026.01.22 Modular arithmetic §2.3–2.4 problems03
2026.01.26 Snow Day §2.5 solutions03
2026.01.27 Fermat's little theorem §3.1–3.2 notes04
2026.01.29 Rings §4.2 problems04
2026.02.02 Subrings §3.3 solutions04
2026.02.03 Domains and fields §7.1 notes05
2026.02.05 Polynomials §7.2 problems05
2026.02.09 Roots §4.3 solution05
2026.02.10 Ring homomorphisms §5.1–5.2 notes06
2026.02.10 Midterm
2026.02.12 Ideals §5.3–5.4 problems06
Winter break
2026.02.23 Quotient rings §4.4 solution06
2026.02.24 Isomorphisms §5.5 notes07
2026.02.26 First isomorphism theorem §5.7 problems07
2026.03.02 Ideals in a quotient §5.6 solution07
2026.03.03 Direct decomposition of a ring §6.5 notes08
2026.03.05 Rings of fractions §13.1 problems08
2026.03.09 Recognizing fields §6.1 solution08
2026.03.10 Prime ideals §6.3 notes09
2026.03.12 Euclidean domains problems09
2026.03.16 Extended Euclidean algorithm §6.2 solution09
2026.03.17 Principal ideal domains §6.4 notes10
2026.03.19 Unique factorization domains problems10
2026.03.23 Non-Euclidean principal ideal domains §7.3 solution10
2026.03.24 Factoring polynomials §7.4 notes11
2026.03.26 Irreducibility criteria §7.5 problems11
2026.03.30 Gaussian primes §10.4 solution11
2026.03.31 Sums of two squares §10.4 notes12
2026.04.02 Review problems12
2026.04.?? Extra tutorial (in 201 Jeffery Hall) TBD solution12
2026.04.?? Exam TBD