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 This repository contains the code relative to the paper _Matrix Product Belief Propagation for reweighted stochastic dynamics over graphs_ ([PNAS](https://www.pnas.org/doi/10.1073/pnas.2307935120), [arxiv](https://arxiv.org/abs/2303.17403)). 
 When possible, variable names match the notation used there. 
-An [errata](errata.pdf) file is also found here.
+An [errata](errata.md) file is also found here.
 
 ### Installation
 Usage requires Julia version >= 1.8, although 1.9 is recommended. You can download Julia [here](https://julialang.org/downloads/).
diff --git a/errata.md b/errata.md
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+# Errata for "Matrix Product Belief Propagation for reweighted stochastic dynamics over graphs"
+Stefano Crotti, Alfredo Braunstein
+
+The article is found at https://www.pnas.org/doi/10.1073/pnas.2307935120.
+
+1. At page 5, below equation 12, the text says $p(m)$ has a minimum at $m\approx 0.145$. It should be either $p(m)$ has a maximum at $m\approx 0.145$ or $g(m)$ has a minimum  at $m\approx 0.145$.
+2. In section 1 of the supplementary information, equations S1, S2, S3, S5, and S7 have a minus sign after $\exp\left \\{ \right .$, which should not be there.
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