From faf588b73374968596cc1e4c2617c5a38a406862 Mon Sep 17 00:00:00 2001
From: Vamsi Krishna Munjuluri V S
 <72971688+mvkrishna2001@users.noreply.github.com>
Date: Tue, 30 Sep 2025 21:17:37 -0400
Subject: [PATCH] Update var name in 'Dynamics Models for Decision Making'

I think we're referring to the split between -- 'x' - what we can act on and 'u' - what we must accommodate.
---
 ssm.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ssm.md b/ssm.md
index 029d3fc4..d729ed51 100644
--- a/ssm.md
+++ b/ssm.md
@@ -10,7 +10,7 @@ $$
 (\mathbf{x}_0,\ \{\mathbf{u}_t\},\ \{\mathbf{d}_t\}) \ \longmapsto\ \{\mathbf{x}_t,\ \mathbf{y}_t\}_{t=0:T},
 $$
 
-where $\mathbf{u}_t$ are **controls** we set, $\mathbf{d}_t$ are **exogenous drivers** we do not control (weather, inflow, demand), $\mathbf{x}_t$ are internal **system variables**, and $\mathbf{y}_t$ are **observations**. The split between $\mathbf{u}$ and $\mathbf{d}$ is practical: it separates what we can act on from what we must accommodate.
+where $\mathbf{u}_t$ are **controls** we set, $\mathbf{d}_t$ are **exogenous drivers** we do not control (weather, inflow, demand), $\mathbf{x}_t$ are internal **system variables**, and $\mathbf{y}_t$ are **observations**. The split between $\mathbf{x}$ and $\mathbf{d}$ is practical: it separates what we can act on from what we must accommodate.
 
 Two design pressures shape such models: