From e2142cb17c2f38ec32ddfd579486c067a798ebfb Mon Sep 17 00:00:00 2001
From: Arthur Ryman <arthur.ryman@gmail.com>
Date: Mon, 20 Jun 2022 19:19:15 -0400
Subject: [PATCH 1/2] matrices: Use simple type alias assignment for Matrix

According to PEP 484, type aliases must use a simple assignment. Matrix was defined in a chained assignment. Change this to two simple assignments. See issue #23647 .
---
 sympy/matrices/__init__.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sympy/matrices/__init__.py b/sympy/matrices/__init__.py
index c7cf351eba59..8e7b6a489161 100644
--- a/sympy/matrices/__init__.py
+++ b/sympy/matrices/__init__.py
@@ -12,7 +12,8 @@
 from .dense import MutableDenseMatrix
 from .matrices import DeferredVector, MatrixBase
 
-Matrix = MutableMatrix = MutableDenseMatrix
+MutableMatrix = MutableDenseMatrix
+Matrix = MutableMatrix
 
 from .sparse import MutableSparseMatrix
 from .sparsetools import banded

From 614ab4e1bade7c0dad0b98311884208209da9c30 Mon Sep 17 00:00:00 2001
From: Arthur Ryman <arthur.ryman@gmail.com>
Date: Mon, 20 Jun 2022 19:27:38 -0400
Subject: [PATCH 2/2] author: add Arthur Ryman to .mailmap

---
 .mailmap | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.mailmap b/.mailmap
index 9af816f66c2d..78c4166d8555 100644
--- a/.mailmap
+++ b/.mailmap
@@ -329,6 +329,7 @@ Arihant Parsoya <parsoyaarihant@gmail.com>
 Arpan Chattopadhyay <f20180319@pilani.bits-pilani.ac.in> Arpan612 <f20180319@pilani.bits-pilani.ac.in>
 Arpit Goyal <agmps18@gmail.com>
 Arshdeep Singh <singh.arshdeep1999@gmail.com>
+Arthur Ryman <arthur.ryman@gmail.com>
 Arun Singh <arunsin997@gmail.com> Arun Singh <erarungwl2013@gmail.com>
 Arun sanganal <74652697+ArunSanganal@users.noreply.github.com>
 Ashish Kumar Gaurav <ashishkg0022@gmail.com>