Numerical Analysis

sachin secrets of my energy

http://freechatrooms.hpage.us/linklist_80786.html

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Could anyone land me Cplex academic license?

hi all,
I have registered my institute in Cplex Academic initiative, but
automatic email says it takes 10 days to proceed, while I have an
urgent quadratic problem to deal with it (numbers of variables/
constraints about 2500). Trial license doesn’t work with nVariables or
nConstraints > 500.

Could anyone land me Cplex academic license (access.ilm file), still
valid for at least couple of days?

Thank you in advance, D.

Comment (1)

Anyone read the book "Calculate primes" by James McCanney?

Hi all

this is about a book titled "Calculate primes – Direct propagation of
the prime numbers" by James M. McCanney.

This book seems to propose a way to directly calculate prime numbers
instead of having to search for them (which sounds like very big news
if true).

The book has an accompanying DVD and can be found at
calculateprimes.com.

I wanted to know if anyone has read the book and what your thoughts
are about it?

cheers,

Comment (1)

Selecting certain columns of Matrix

Hi,

Can you think of some "selection matrix" to select only certain colum
vectors of a matrix?
For example,
X=[x1 x2 x3 x4] where xi is a column vector.
I would like to have a matrix J such that
XJ or JX will be [x1 x3] by selecting only 1st and 3rd columns of the
matrix.

Thanks in advance.

Comments (6)

sachin secrets of my energy

http://freechatrooms.hpage.us/linklist_80786.html

No Comments

Could anyone land me Cplex academic license?

hi all,
I have registered my institute in Cplex Academic initiative, but
automatic email says it takes 10 days to proceed, while I have an
urgent quadratic problem to deal with it (numbers of variables/
constraints about 2500). Trial license doesn’t work with nVariables or
nConstraints > 500.

Could anyone land me Cplex academic license (access.ilm file), still
valid for at least couple of days?

Thank you in advance, D.

Comment (1)

Anyone read the book "Calculate primes" by James McCanney?

Hi all

this is about a book titled "Calculate primes – Direct propagation of
the prime numbers" by James M. McCanney.

This book seems to propose a way to directly calculate prime numbers
instead of having to search for them (which sounds like very big news
if true).

The book has an accompanying DVD and can be found at
calculateprimes.com.

I wanted to know if anyone has read the book and what your thoughts
are about it?

cheers,

Comment (1)

Selecting certain columns of Matrix

Hi,

Can you think of some "selection matrix" to select only certain colum
vectors of a matrix?
For example,
X=[x1 x2 x3 x4] where xi is a column vector.
I would like to have a matrix J such that
XJ or JX will be [x1 x3] by selecting only 1st and 3rd columns of the
matrix.

Thanks in advance.

Comments (6)

sachin secrets of my energy

http://freechatrooms.hpage.us/linklist_80786.html

No Comments

Could anyone land me Cplex academic license?

hi all,
I have registered my institute in Cplex Academic initiative, but
automatic email says it takes 10 days to proceed, while I have an
urgent quadratic problem to deal with it (numbers of variables/
constraints about 2500). Trial license doesn’t work with nVariables or
nConstraints > 500.

Could anyone land me Cplex academic license (access.ilm file), still
valid for at least couple of days?

Thank you in advance, D.

Comment (1)