Fwd: Delivery Status Notification (Failure)

[Jason Moore]

Any idea why this person can't post to our google group? See below.

Jason
moorepants.info
+01 530-601-9791

---------- Forwarded message ----------
From: Wanlin Xie <wx2...@columbia.edu>
Date: Mon, Mar 23, 2015 at 1:08 PM
Subject: Fwd: Delivery Status Notification (Failure)
To: Jason Moore <moore...@gmail.com>

Hi Jason,

I'm so sorry to keep bothering you, but I keep running into problems. I'm not sure what to do.

Thanks,

Wanlin

---------- Forwarded message ----------
From: Mail Delivery Subsystem <mailer...@google.com>
Date: Mon, Mar 23, 2015 at 4:04 PM
Subject: Delivery Status Notification (Failure)
To: wx2...@columbia.edu


Hello wx2...@columbia.edu,

We're writing to let you know that the group you tried to contact (sympy) may not exist, or you may not have permission to post messages to the group. A few more details on why you weren't able to post:

 * You might have spelled or formatted the group name incorrectly.
 * The owner of the group may have removed this group.
 * You may need to join the group before receiving permission to post.
 * This group may not be open to posting.

If you have questions related to this or any other Google Group, visit the Help Center at http://groups.google.com/support/.

Thanks,

Google Groups



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Date: Mon, 23 Mar 2015 16:04:22 -0400
Message-ID: <CADTPy5nt24QTVwNd-rELb+p1...@mail.gmail.com>
Subject: Implementing Multiple Coordinate Systems
From: Wanlin Xie <wx2...@columbia.edu>
To: sy...@googlegroups.com
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X-Scanned-By: MIMEDefang 2.68 on 128.59.29.6

Dear Mentors,

Hi, my name is Wanlin. The project I am applying for is implementing
multiple coordinate systems in SymPy. I am now finishing multivariable
calculus and completed the introduction of differential equations in high
school.
    My idea is to first split the Vector class into two classes 2D and 3D.
From there, 2D branches down to Cartesian and Polar coordinates, while 3D
branches down to Spherical, Cylindrical, and Cartesian coordinates. Then I
will relate the different variables through equations that can convert
equations, shapes, solids, etc. from one coordinate system to another. I
can also implement the use of Jacobians and figure out a way to do
transformations in just any variable system. I was wondering what work has
been done about these multiple coordinate systems, and if this is a good
direction to go in. Any advice will be greatly appreciated.

Thank you so much!

Wanlin Xie

[Ondřej Čertík]

Did Wanlin join the group first?

Ondrej

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[Ondřej Čertík]

And make sure Wanlin joins it with the same email, that is not
gmail.com but wx2...@columbia.edu.