By Keith Conrad. Standalone expository notes hosted on the author's University of Connecticut website. The inspected title page is undated; no publication year is established.
Cited passages: printed p. 1, Definition 1; printed p. 2, Theorem 2 and its proof; printed p. 3, Corollary 4 and its proof.
Authored expository notes by Keith Conrad. No document date is established.
Cited passages: §§1–2, Theorem 2.5, printed pp. 1–4: rigid motions, rotations, reflections and dihedral order conventions.
Author-hosted expository notes, 47 pages. No date appears on the title page; no publication date is established.
Cited passages: §3, Definition 3.1 and Theorem 3.3; §4, Theorem 4.2; §10, exterior algebra.
Cited passages: Keith Conrad, Fermat's Test, p. 2, Definition 2.4 and footnote 3 on the two witness conventions; Keith Conrad, Fermat's Test, pp. 5–6, Definition 4.1 and the list beginning with 561.
Group Actions by Keith Conrad Created 2026-10-13 Updated 2026-10-18
Cited passages: Definition 1.3, printed page 2: the two action axioms; Theorem 3.16(b)-(c), printed pages 12-13: conjugate stabilizers, transport cosets and the orbit-stabilizer formula.
Additional cited passages: printed p. 3, Theorem 1.7 and the following kernel paragraph; pp. 7–8, Example 2.12; p. 9, Definition 2.17 and Example 2.20; p. 20, comparison of free and faithful actions. The standalone notes are authored by Keith Conrad; the university hosts the author’s website. No publication year or version is verified.
By Keith Conrad. These standalone notes are hosted on the author's University of Connecticut website. No document date is established.
Cited passages: printed p. 1, title/byline and §1 opening paragraph: nonzero convention and equal counts of squares and nonsquares; printed p. 2, §2 opening notation for the Legendre symbol.
Publisher: Keith Conrad (author-hosted notes).
Cited passages: §3, printed p. 9: elementary, simple, decomposable, and pure tensors; Example 2.1, printed pp. 4–5: outer products do not fill the matrix space.
Standalone authored expository note. The inspected copy is undated; no publication date is inferred from the search engine or hosting path. It explicitly writes p-adic expansions with low-order terms first.
Cited passages: §1, printed p. 1: p-adic rational expansions and explicit low-order-first convention; §3, Theorem 3.1, printed pp. 3–5: eventual periodicity.
Cited passages: Definition 1.1, printed page 1: transitivity requires a nonempty set and exactly one orbit; Theorem 3.1, printed page 2: equivalent tests for transitivity.
Zorn’s Lemma and Some Applications by Keith Conrad Created 2026-10-13 Updated 2026-10-18
Cited passages: Zorn’s Lemma and Some Applications, §1, p. 4, paragraph on the 1935 introduction to shorten algebraic proofs; Zorn’s Lemma and Some Applications, §4, pp. 18–19, Theorem 4.1 and Corollary 4.2; Zorn’s Lemma and Some Applications, §4, pp. 18–19, chain-union proof of Theorem 4.1 and extension argument of Corollary 4.2.
Additional cited passages: §4, printed p. 19, Corollary 4.2, extension of an independent subset to a basis; printed p. 20, Corollary 4.5 and the rational-basis construction. The inspected notes are undated.