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 <[email protected]> Date: Mon, Mar 23, 2015 at 1:08 PM Subject: Fwd: Delivery Status Notification (Failure) To: Jason Moore <[email protected]> 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 <[email protected]> Date: Mon, Mar 23, 2015 at 4:04 PM Subject: Delivery Status Notification (Failure) To: [email protected] Hello [email protected], 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 ----- Original message ----- X-Received: by 10.182.168.105 with SMTP id zv9mr1100396obb.6.1427141082018; Mon, 23 Mar 2015 13:04:42 -0700 (PDT) Return-Path: <[email protected]> Received: from millet.cc.columbia.edu (millet.cc.columbia.edu. [128.59.72.250]) by gmr-mx.google.com with ESMTPS id kt5si394847qcb.3.2015.03.23.13.04.41 for <[email protected]> (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 23 Mar 2015 13:04:41 -0700 (PDT) Received-SPF: pass (google.com: domain of [email protected] designates 128.59.72.250 as permitted sender) client-ip=128.59.72.250; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of [email protected] designates 128.59.72.250 as permitted sender) [email protected] Received: from hazelnut (hazelnut.cc.columbia.edu [128.59.213.250]) by millet.cc.columbia.edu (8.13.8/8.13.8) with ESMTP id t2NJxxAU016292 for <[email protected]>; Mon, 23 Mar 2015 16:04:41 -0400 Received: from hazelnut (localhost.localdomain [127.0.0.1]) by hazelnut (Postfix) with ESMTP id 983F66D for <[email protected]>; Mon, 23 Mar 2015 16:04:41 -0400 (EDT) Received: from salak.cc.columbia.edu (salak.cc.columbia.edu [128.59.29.6]) by hazelnut (Postfix) with ESMTP id 836106D for <[email protected]>; Mon, 23 Mar 2015 16:04:41 -0400 (EDT) Received: from mail-qg0-f41.google.com (mail-qg0-f41.google.com [209.85.192.41]) by salak.cc.columbia.edu (8.14.4/8.14.3) with ESMTP id t2NK4fwC003251 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for <[email protected]>; Mon, 23 Mar 2015 16:04:41 -0400 (EDT) Received: by qgf74 with SMTP id 74so36799945qgf.2 for <[email protected]>; Mon, 23 Mar 2015 13:04:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-type; bh=ibzNYpnr+fnsx6AT5xy4lejAJ7rdZwPaoku8I/AFsrI=; b=B1PNTYPuTFPJRxDW/3h8Um6eyCFJGACPSzz7VM30CUk9AJViRG1y1lmoh6xT+sVEAZ lQq/hfML3G3mZyywyXj4XOLg8Y2ZgIM7fAaHkypu3Bf666PwtFS9OvIAJl+3SHyAvyw0 F0/fbIex4vD3X7SFRD++ryHfzQ13r2PsCqZx3AECVy8+809/LZesoW5fNcFRjTNaO+Uc IIrkGa0rYh4/xqR/5RBSiN/t0aKNIW9u1D/SqgRSE9+bv2anlnKWAcuE3na/rY6NShnd 5ElJgWLQZsX6wjcwBIlA+DJAplycZDtUj1h/JhLHLRidpXgACC0YBoB1+72NqUZnmQ6S Jt0Q== X-Gm-Message-State: ALoCoQkLgrvDaZ6Be0RabRlHvhI0ya0FSl2rSerPEhIKLHxnbjcaEKiRrlVsyRPiyOd20Dluvn5r8Lq19mZ3kOqHbtWFJdDyDS3cXjs4Ms2L+wuqdbszSbJdXyGnCMeZZ3n31TJ/RlOR X-Received: by 10.140.33.164 with SMTP id j33mr1295900qgj.10.1427141062701; Mon, 23 Mar 2015 13:04:22 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.140.33.164 with SMTP id j33mr1295892qgj.10.1427141062624; Mon, 23 Mar 2015 13:04:22 -0700 (PDT) Received: by 10.140.81.179 with HTTP; Mon, 23 Mar 2015 13:04:22 -0700 (PDT) Date: Mon, 23 Mar 2015 16:04:22 -0400 Message-ID: < cadtpy5nt24qtvwnd-relb+p168mh4s01fp3j6r8ytmpjr4q...@mail.gmail.com> Subject: Implementing Multiple Coordinate Systems From: Wanlin Xie <[email protected]> To: [email protected] Content-Type: multipart/alternative; boundary=001a1139bd9c1514890511fa2c96 X-No-Spam-Score: Local 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 -- You received this message because you are subscribed to the Google Groups "sympy" group. 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