589 reputation
316
bio website
location Reno, NV
age 23
visits member for 2 years, 9 months
seen Jul 20 at 20:41

I'm a math/programming teacher and freelance programmer. My first language was Scheme, and I have a major soft spot for functional programming. I read SICP every year and do all of the exercises (so I'm pretty good at hw-type problems.)


Jul
2
awarded  Curious
Jun
2
awarded  Nice Question
May
2
revised Problem reconciling this proof with what I know about the Reals.
Added information
May
1
asked Problem reconciling this proof with what I know about the Reals.
Apr
15
accepted Help verifying my proof that for any $\epsilon>0$, there exists rational $\frac{j}{k}$ such that $0<\frac{j}{k}<\epsilon$
Apr
15
revised Help verifying my proof that for any $\epsilon>0$, there exists rational $\frac{j}{k}$ such that $0<\frac{j}{k}<\epsilon$
added 7 characters in body
Apr
15
comment Help verifying my proof that for any $\epsilon>0$, there exists rational $\frac{j}{k}$ such that $0<\frac{j}{k}<\epsilon$
I didn't know about the Archimedean Property... Thanks for pointing that out.
Apr
15
comment Help verifying my proof that for any $\epsilon>0$, there exists rational $\frac{j}{k}$ such that $0<\frac{j}{k}<\epsilon$
Clarity seems to escape me. I don't know why I didn't think of that.
Apr
15
asked Help verifying my proof that for any $\epsilon>0$, there exists rational $\frac{j}{k}$ such that $0<\frac{j}{k}<\epsilon$
Apr
2
accepted Proving that if $\frac{m}{n}<\sqrt{2}$ then there exists $\frac{m'}{n'}$ such that $\frac{m}{n}< \frac{m'}{n'}<\sqrt{2}$
Mar
27
revised Proving that if $\frac{m}{n}<\sqrt{2}$ then there exists $\frac{m'}{n'}$ such that $\frac{m}{n}< \frac{m'}{n'}<\sqrt{2}$
added 242 characters in body
Mar
27
comment Proving that if $\frac{m}{n}<\sqrt{2}$ then there exists $\frac{m'}{n'}$ such that $\frac{m}{n}< \frac{m'}{n'}<\sqrt{2}$
I like this, but at this point in the book, Spivak hasn't covered limits...
Mar
27
asked Proving that if $\frac{m}{n}<\sqrt{2}$ then there exists $\frac{m'}{n'}$ such that $\frac{m}{n}< \frac{m'}{n'}<\sqrt{2}$
Mar
25
comment Proving that $\sqrt{2}+\sqrt{3}$ is irrational
This is clever and very simple. I barely missed this idea. I was trying to do stuff with conjugates, but didn't quite connect the dots.
Mar
25
accepted Proving that $\sqrt{2}+\sqrt{3}$ is irrational
Mar
25
revised Proving that $\sqrt{2}+\sqrt{3}$ is irrational
added 1 characters in body
Mar
25
comment Proving that $\sqrt{2}+\sqrt{3}$ is irrational
Oddly, those didn't come up when I searched. I saw those after posting and was going to close, but then people started answering. Still, it's been helpful.
Mar
25
asked Proving that $\sqrt{2}+\sqrt{3}$ is irrational
Mar
18
comment Proof that $\binom{ n}{k} \in \mathbb N$
That's probably my biggest complaint about the text. For the most part, the exercises are very illuminating. Every once in a while though, I get a problem like this that really makes me wonder what he's trying to show here.
Mar
18
accepted Proof that $\binom{ n}{k} \in \mathbb N$