From 804ea847d4438f4cd30c8b86cf9852774e201870 Mon Sep 17 00:00:00 2001
From: OlivierHnt <38465572+OlivierHnt@users.noreply.github.com>
Date: Wed, 20 Mar 2024 18:37:59 +0100
Subject: [PATCH] Fix multiplication operator with `SinFourier`

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

diff --git a/src/sequence_spaces/symmetry.jl b/src/sequence_spaces/symmetry.jl
index 37980115..de2ba570 100644
--- a/src/sequence_spaces/symmetry.jl
+++ b/src/sequence_spaces/symmetry.jl
@@ -690,7 +690,7 @@ _mult_domain_indices(s::CosFourier) = _mult_domain_indices(Chebyshev(order(s)))
 _isvalid(s::CosFourier, i::Int, j::Int) = _isvalid(Chebyshev(order(s)), i, j)
 
 _mult_domain_indices(s::SinFourier) = -order(s):order(s)
-_isvalid(s::SinFourier, i::Int, j::Int) = (0 < abs(j)) & (0 < abs(i-j) ≤ order(s))
+_isvalid(s::SinFourier, i::Int, j::Int) = 0 < abs(i-j) ≤ order(s)
 
 # Norm