add some symmray support

Author: jcmgray

quimb/tensor/tensor_core.py

@@ -903,6 +903,13 @@ def tensor_multifuse(ts, inds, gauges=None):
         # contract into a single gauge
         gauges[inds[0]] = functools.reduce(lambda x, y: do("kron", x, y), gs)
 
+    if hasattr(ts[0].data, "align_axes"):
+        arrays = [t.data for t in ts]
+        axes = [tuple(map(t.inds.index, inds)) for t in ts]
+        arrays = do("align_axes", *arrays, axes)
+        for t, a in zip(ts, arrays):
+            t.modify(data=a)
+
     # index fusing
     for t in ts:
         t.fuse_({inds[0]: inds})
@@ -4178,6 +4185,19 @@ def conj(self, mangle_inner=False, inplace=False):
             append = None if mangle_inner is True else str(mangle_inner)
             tn.mangle_inner_(append)
 
+        if hasattr(next(iter(tn.tensor_map.values())), "phase_flip"):
+            # need to phase dual outer indices
+            outer_inds = tn.outer_inds()
+            for t in tn:
+                data = t.data
+                dual_outer_axs = tuple(
+                    ax
+                    for ax, ix in enumerate(t.inds)
+                    if (ix in outer_inds) and not data.indices[ax].dual
+                )
+                if dual_outer_axs:
+                    t.modify(data=data.phase_flip(*dual_outer_axs))
+
         return tn
 
     conj_ = functools.partialmethod(conj, inplace=True)