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location New York, United States
age 25
visits member for 1 year, 10 months
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I am (trying to be) a graduate student of mathematics.

One cannot escape the feeling that these mathematical formulae have an independent existence and an intelligence of their own, that they are wiser than we are, wiser even than their discoverers, that we get more out of them than we originally put in to them. -Heinrich Hertz

It was too easy. Therefore I didn't study, and therefore it was too hard. -Paul Halmos


1d
comment Going Back to Grad School After Being Away from Math
Well a very popular one these days seems to be Stewarts book which is quite enormous, though fairly thorough. Spivak has a book that I havent read yet but have heard great things about. As i understand it it would also serve as a bit of a primer for analysis which could be quite useful for you.
1d
answered Going Back to Grad School After Being Away from Math
Aug
13
accepted Decreasing function Mean Value Theorem proof
Aug
13
revised Decreasing function Mean Value Theorem proof
texed the problem and attempt
Aug
13
asked Decreasing function Mean Value Theorem proof
Aug
12
accepted Showing a basis exists for a particular transformation
Aug
12
comment Showing a basis exists for a particular transformation
Its a problem I encountered while studying for a qualifying exam, Its possible the question is outside of the scope of what Ive learned so far. I know of Jordan Form but have never used it.
Aug
12
comment Showing a basis exists for a particular transformation
I dont know of minimal polynomials but am interested in how they help show that the transformation is diagnolizable. In short, I know very little about testing if a matrix is diagnolizable
Aug
12
comment Showing a basis exists for a particular transformation
I understand that this projection transformation works as you propose, but what im missing is how I know that such a basis exists? it seems obvious to me that if it exists...this is the one it should be.
Aug
12
asked Showing a basis exists for a particular transformation
Aug
9
comment AB=AC=I $\rightarrow$ B=C
Though this is useful, I think a user asking a question about RREF and existence of inverses wont be familiar with ring isomorphisms and linear maps and that this terminology is more likely to confuse rather than to help
Aug
5
comment Uniform Convergence verification for Sequence of functions - NBHM
We are interested in showing that the sup($f_n$) converges to 0. Thus we take the derivative of $f_n$ with respect to $x$, and see that the max occurs at $x_{max} = 2/n$. Then $f_n(x_{max})$ has a slightly different value than the one you proposed.
Aug
4
comment Uniform Convergence verification for Sequence of functions - NBHM
It makes little difference in your analysis but for the $f_n(x)=n^2x^2e^{-nx}$ problem, I think that the max occurs at $x = 2/n$
Jul
2
awarded  Curious
Apr
25
awarded  Popular Question
Mar
6
comment Euler-Lagrange Eqn to find eqn of a straight line
notation can be confusing when youre being introduced. glad to help.
Mar
6
comment Euler-Lagrange Eqn to find eqn of a straight line
l(f) is exactly[1] the length of the curve. And defeat the object of using it? the object is to have an equation which is solveable for our function of interest. integrating is part of this solving process. [1] mathwords.com/a/arc_length_of_a_curve.htm
Mar
6
comment Euler-Lagrange Eqn to find eqn of a straight line
edit looks good. now just solve for your constants in terms of your initial two arbitrary points and youre all set.
Mar
6
comment Euler-Lagrange Eqn to find eqn of a straight line
yep. exactly. our function is a function of x,y and y'. It just so happens that the explicit y dependence is missing hence the first half of EL being equal to 0.
Mar
6
answered Euler-Lagrange Eqn to find eqn of a straight line