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21131
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location Palo Alto, CA
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Dec
19
asked Cutting a unit square into smaller squares
Dec
19
awarded  Nice Question
Dec
18
comment (Finitely) decimal expressible real numbers between [0,1] countable?
Definitely. What I meant is that no two finite representations refer to the same number.
Dec
18
awarded  Scholar
Dec
18
accepted Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
Dec
18
comment (Finitely) decimal expressible real numbers between [0,1] countable?
By the way, has anyone seen this set come up in another context?
Dec
18
comment (Finitely) decimal expressible real numbers between [0,1] countable?
Good point. Luckily, we don't have to worry about nonuniqueness when the decimal expansions are finite.
Dec
18
comment Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
Thanks, this is really nice! But you did cheat and use polynomials ;-)
Dec
18
revised Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
added 6 characters in body
Dec
18
comment Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
Yes, thank you.
Dec
18
comment (Finitely) decimal expressible real numbers between [0,1] countable?
Right. "333..." isn't a "legitimate" number, but "0.333..." is.
Dec
18
revised (Finitely) decimal expressible real numbers between [0,1] countable?
added 307 characters in body
Dec
18
awarded  Teacher
Dec
18
answered (Finitely) decimal expressible real numbers between [0,1] countable?
Dec
18
awarded  Editor
Dec
18
revised Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
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Dec
18
awarded  Student
Dec
18
asked Geometric argument that operators on $\mathbb{R}^3$ have an eigenvalue?
Dec
18
awarded  Autobiographer