chore: import upstream snapshot with attribution

2026-07-13 12:32:53 +08:00
commit 2a16f2f53b
247 changed files with 69150 additions and 0 deletions
@@ -0,0 +1,14 @@
+from mpmath import fp
+
+# Real part of spherical harmonic Y_(4,4)(theta,phi)
+def Y(l,m):
+    def g(theta,phi):
+        R = abs(fp.re(fp.spherharm(l,m,theta,phi)))
+        x = R*fp.cos(phi)*fp.sin(theta)
+        y = R*fp.sin(phi)*fp.sin(theta)
+        z = R*fp.cos(theta)
+        return [x,y,z]
+    return g
+
+fp.splot(Y(4,4), [0,fp.pi], [0,2*fp.pi], points=300,
+    dpi=45, file="spherharm44.png")