From 726c04435df3883c56c5123ea8338bb47870eb73 Mon Sep 17 00:00:00 2001
From: Jutho <Jutho@users.noreply.github.com>
Date: Sat, 30 Mar 2024 01:08:25 +0100
Subject: [PATCH] fix single arg fuse (#111)

---
 src/spaces/vectorspaces.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/spaces/vectorspaces.jl b/src/spaces/vectorspaces.jl
index d8e764f0..0124868d 100644
--- a/src/spaces/vectorspaces.jl
+++ b/src/spaces/vectorspaces.jl
@@ -157,7 +157,7 @@ Return a single vector space of type `S` that is isomorphic to the fusion produc
 individual spaces `V₁`, `V₂`, ..., or the spaces contained in `P`.
 """
 function fuse end
-fuse(V::ElementarySpace) = V
+fuse(V::ElementarySpace) = isdual(V) ? flip(V) : V
 function fuse(V₁::VectorSpace, V₂::VectorSpace, V₃::VectorSpace...)
     return fuse(fuse(fuse(V₁), fuse(V₂)), V₃...)
 end