6,743 reputation
731
bio website
location
age
visits member for 1 year, 10 months
seen 1 hour ago

Oct
20
reviewed Close What is the dimension of the space $V$ of all matrices $S$
Oct
20
reviewed Close Speed of Fisher Kolmogorov Wave equation in Matlab
Oct
20
reviewed Close Proving $\rm{card}(\Bbb Z)=\rm{card}(\Bbb N)$
Oct
20
reviewed Close Have most popular(famous) mathematicians been determinists?
Oct
20
reviewed Close Help me to prove this inequality.
Oct
20
reviewed Close STPM CHAPTER 6 DIFFERENTIAL EQUATION
Oct
18
comment Convolution of cosine with exponential
I edited to add steps. Hope that helps.
Oct
18
revised Convolution of cosine with exponential
added 393 characters in body
Oct
18
answered Convolution of cosine with exponential
Oct
18
comment Why is the Laplace/Helmholtz equation only separable in a finite number of coordinate systems?
mathworld.wolfram.com/StaeckelDeterminant.html
Oct
17
comment Using the convergence of Fourier Series Theorem to estimate the number of terms for Fourier Series $f(x)$
On the second implication on the bottom set of calculations, I took the reciprocal of both sides... Of course $1/.001=1000$.
Oct
17
comment Using the convergence of Fourier Series Theorem to estimate the number of terms for Fourier Series $f(x)$
See if the edit helps.
Oct
17
revised Using the convergence of Fourier Series Theorem to estimate the number of terms for Fourier Series $f(x)$
added 100 characters in body
Oct
17
answered Using the convergence of Fourier Series Theorem to estimate the number of terms for Fourier Series $f(x)$
Oct
17
comment Using the convergence of Fourier Series Theorem to estimate the number of terms for Fourier Series $f(x)$
Curious: what is the title/author of this text?
Oct
14
comment Solving Inhomogeneous Differential Equations Using the Undetermined Coefficients Method
Your answer is correct.
Oct
14
comment Differentiating: quotient rule problem
Does the book answer have a set of parentheses around the numerator with a minus outside them?
Oct
11
comment Why are $L^p$ spaces for $p\not=1,2,\infty$ important?
Also, since $\|f\|_{L^\infty}=\lim_{p\to\infty}\|f\|_{L^p}$, the "intermediate" $p$ values become relevant in understanding $L^\infty$.
Oct
11
revised Why are $L^p$ spaces for $p\not=1,2,\infty$ important?
edited title
Oct
11
comment Why are $L^p$ spaces for $p\not=1,2,\infty$ important?
Not an "application", but they are all Banach spaces. Since $p=2$ is exceptional (noted above), then $p=1,\infty$ have a simple geometry, it seems natural to ask if we can generalize vector $p$ norms to the function space setting and see what properties are preserved. (I admit this is not an "application". Perhaps this would provide "motivation" for studying them.) Finally, the structure of their dual spaces $L^p$ and $L^q$ where $1/p+1/q=1$ is even more motivation.