From 2ce7924420cde71ef32fb306d82690a2f1be3750 Mon Sep 17 00:00:00 2001 From: Liang Zhang Date: Tue, 19 Aug 2025 17:00:58 +0800 Subject: [PATCH] Fix a typo in algebraic_topology_iii.tex fix a typo in algebraic_topology_iii.tex --- III_M/algebraic_topology_iii.tex | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/III_M/algebraic_topology_iii.tex b/III_M/algebraic_topology_iii.tex index 3320153..055b176 100644 --- a/III_M/algebraic_topology_iii.tex +++ b/III_M/algebraic_topology_iii.tex @@ -2456,7 +2456,7 @@ \section{Cup product} \end{prop} \begin{proof}[Proof of previous proposition] - Let $\rho_n: C_n(X) \to C_n(x)$ be given by + Let $\rho_n: C_n(X) \to C_n(X)$ be given by \[ \sigma \mapsto (-1)^{n(n + 1)/2} \sigma|_{[v_n, v_{n - 1}, \ldots, v_0]} \]