A result of Lemmermeyer on class numbers
Abstract
I present Franz Lemmermeyer's proof that if p is a prime congruent to 9 mod 16 then the class number of Q(p(1/4)) is congruent to 2 mod 4.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.