Inner product space with no ortho-normal basis without choice
Abstract
We prove in ZF that there is an inner product space, in fact, nicely definable with no orthonormal basis.
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.