> By the way, does anybody know what the deal is with: "Please forgive
> me to send it to you for I am in China and have a problem to access
> Google groups."
>
> Do most people in China really not have access to Google groups? If
> so, that's a very good reason for us to consider at least some so
Do most people in China really not have access to Google groups? If
> so, that's a very good reason for us to consider at least some sort of
> alternative way to access the groups.
>
>
Apparently it's not always so easy for a variety of things, based on
comments on person has often made on a
Thanks Ralf!
By the way, does anybody know what the deal is with: "Please forgive
me to send it to you for I am in China and have a problem to access
Google groups."
Do most people in China really not have access to Google groups? If
so, that's a very good reason for us to consider at least some
On Sunday, July 12, 2015 at 2:34:56 PM UTC+2, Stein William wrote:
> -- Forwarded message --
> From: ruiming zhang
> Date: Sunday, July 12, 2015
> Subject: a sage bug
> To: wst...@math.washington.edu
>
> ...
> e=x+1<=x-2
> e*(-1)
> -x-1<=-x+2,
This is known and has a fix. Only th
When working with nxn matrix, writing a scalar (= a number if you name
"numbers" matrix elements) like 'a' is the same than writing 'aI' where I
is identity matrix with 1 in diagonal and 0 for other elements) or writing
the diagonal matrix with a in diagonal and 0 for other elements)
addition
-- Forwarded message --
From: *ruiming zhang*
Date: Sunday, July 12, 2015
Subject: a sage bug
To: wst...@math.washington.edu
Dear Professor Stein,
If you try in sage 6.7
e=x+1<=x-2
e*(-1)
you get
-x-1<=-x+2,
which is bad.
Please forgive me to send it to you for I am in Chin
On 12 July 2015 at 11:57, avi kaur wrote:
> Hello
>
> I figured out that when we add a number to a matrix, It adds this
> number to all the elements at diagonal of matrix. for example:
>
> sage: a
> [ 1 2 2 6]
> [ 4 6 2 5]
> [56 7 4 8]
> [ 8 3 9 6]
> sage: a + 2
> [ 3 2 2 6]
> [ 4
Hi Avi,
On 2015-07-12, avi kaur wrote:
> Hello
>
> I figured out that when we add a number to a matrix, It adds this
> number to all the elements at diagonal of matrix. for example:
That's the expected behaviour. If R is a commutative ring and M is the
ring of all nxn matrices over R, then we ca
Hello
I figured out that when we add a number to a matrix, It adds this
number to all the elements at diagonal of matrix. for example:
sage: a
[ 1 2 2 6]
[ 4 6 2 5]
[56 7 4 8]
[ 8 3 9 6]
sage: a + 2
[ 3 2 2 6]
[ 4 8 2 5]
[56 7 6 8]
[ 8 3 9 8]
As you can see in above examp
