From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 14 Nov 2017 01:25:58 +0000 (+0000)
Subject: symbolic.py: wip
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=5d5060a17a7cf7c2b2eb9d1c2adfc900bf8986b1;p=moebius3.git

symbolic.py: wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/symbolic.py b/symbolic.py
index 9de7ccd..42a24e3 100755
--- a/symbolic.py
+++ b/symbolic.py
@@ -26,10 +26,10 @@ p_rightvars = p_start.subs( theta, s/r ).subs( r, 1/la )
 print
 pprint(p_rightvars)
 
-dirn_rightvars = diff(p_rightvars, s)
+p_dirn_rightvars = diff(p_rightvars, s)
 
 print
-pprint(dirn_rightvars)
+pprint(p_dirn_rightvars)
 
 zeta = Wild('zeta')
 
@@ -44,3 +44,16 @@ p_nosing[1] = (p_nosing[1]
 print
 pprint(p_nosing,)
 
+t = symbols('t')
+
+q_owncoords = p_nosing.replace(s,t).replace(la,-la)
+q_dirn_owncoords = p_dirn_rightvars.replace(s,t).replace(la,-la)
+
+q_dirn_owncoords_0 = q_dirn_owncoords.replace(t,0)
+
+print
+pprint(q_owncoords)
+print
+pprint(q_dirn_owncoords)
+print
+pprint(q_dirn_owncoords_0)