792 reputation
424
bio website math.utep.edu/faculty/…
location El Paso, TX
age 33
visits member for 2 years, 10 months
seen Nov 21 at 5:10

Computational Science PhD student
University of Texas El Paso
Climate & Energy Science Student Organization President
National Energy Technology Laboratory Intern
NSF LSAMP Fellow


Sep
15
comment Understanding the notation of the gradient of a vector function
So then, $\nabla v$ is equivalent to the jacobian of v! That's cool!
Sep
15
comment Understanding the notation of the gradient of a vector function
Awesome! Thank you, @enzotib! :)
Sep
15
accepted Understanding the notation of the gradient of a vector function
Sep
15
comment Understanding the notation of the gradient of a vector function
According to the book, the final result $\sigma\cdot\nabla v^T$ is supposed to be a scalar quantity. Your final result seems to be a vector, if I'm not mistaken...
Sep
15
comment Understanding the notation of the gradient of a vector function
So the gradient of a vector is a matrix then, right?
Sep
15
revised Understanding the notation of the gradient of a vector function
emphasized output of gradient of a vector
Sep
15
asked Understanding the notation of the gradient of a vector function
Sep
15
comment Understanding tensor divergence notation in an integral
let us continue this discussion in chat
Sep
15
comment Understanding tensor divergence notation in an integral
Ok... and by the requirement that the tensor is smooth, can we conclude that $\sigma_{ij}$ is a smooth function!
Sep
14
accepted Understanding tensor divergence notation in an integral
Sep
14
comment Understanding tensor divergence notation in an integral
Oh... ok... So, at each point, a matrix is assigned. Could I also consider it as if $\sigma$ were a matrix whose elements are functions of variables in $R^2$?
Sep
14
comment Understanding tensor divergence notation in an integral
In the definition of $\sigma$, it maps a vector to a matrix. But in your notation of the right hand side, wouldn't $\sigma n$ be a vector? Isn't this a contradiction?
Sep
14
comment Understanding tensor divergence notation in an integral
So, you mean "the usual divergence theorem" for each column vector of $\sigma$?
Sep
14
accepted Accumulation points of sequences as limits of subsequences?
Sep
14
asked Understanding tensor divergence notation in an integral
Sep
14
awarded  Citizen Patrol
Sep
14
comment Numerical solution of fractional integro-diffrential equ. using collocation method?
This question may be best posted on scicomp.stackexchange.com. It is more geared towards numerical methods for scientific computing.
Sep
14
comment Understanding Line integral notation
@MichaelBoratko: Yes, in fact, I'm evaluating the RHS integral in this notation. I'm parameterizing a curve around a quadrilateral, one segment at a time. Would $dS_{1}$ (in my case) be equivalent to ||C'(t)||dt?
Sep
14
comment Understanding Line integral notation
Its in Understanding and Implementing the Finite Element Method by M.S. Gockenbach.
Sep
14
asked Understanding Line integral notation