From 710f3da1571d55327322d19e64b1c3efcc49e21e Mon Sep 17 00:00:00 2001
From: alberto <albedef@protonmail.com>
Date: Mon, 13 Apr 2026 11:53:52 +0200
Subject: [PATCH] Match order with pseudocode.

---
 src/afgl/util/lanczos.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/afgl/util/lanczos.py b/src/afgl/util/lanczos.py
index 01c1f44..5dcc323 100644
--- a/src/afgl/util/lanczos.py
+++ b/src/afgl/util/lanczos.py
@@ -31,9 +31,9 @@ def lanczos(L, s, M):
         w = L @ V[:, j]
         alp[j] = np.dot(V[:, j], w)
 
-        w = w - V[:, j] * alp[j]
+        w = w - alp[j] * V[:, j]
         if j > 0:
-            w = w - V[:, j - 1] * beta[j - 1]
+            w = w - beta[j - 1] * V[:, j - 1]
 
         if j < M - 1:
             beta[j] = LA.norm(w)