From ccfd4fbf04ac40eadc97527bbeef3b9254d27cbe Mon Sep 17 00:00:00 2001
From: Jan Petykiewicz <jan@mpxd.net>
Date: Mon, 15 Jul 2024 16:32:48 -0700
Subject: [PATCH] use parentheses instead of backslash

---
 meanas/fdfd/waveguide_cyl.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/meanas/fdfd/waveguide_cyl.py b/meanas/fdfd/waveguide_cyl.py
index 6b3a160..0d3be0b 100644
--- a/meanas/fdfd/waveguide_cyl.py
+++ b/meanas/fdfd/waveguide_cyl.py
@@ -73,8 +73,10 @@ def cylindrical_operator(
 
     omega2 = omega * omega
 
-    op = (omega2 * diag((Tx, Ty)) + pa) @ diag((a0, a1)) + \
+    op = (
+        (omega2 * diag((Tx, Ty)) + pa) @ diag((a0, a1))
         - (sparse.bmat(((None, Ty), (Tx, None))) + pb / omega2) @ diag((b0, b1))
+        )
     return op