From ef91d9f91b6756beb8c2870917c3f41857b0c485 Mon Sep 17 00:00:00 2001 From: Bokuan Li Date: Sun, 15 Mar 2026 23:04:46 -0400 Subject: [PATCH] Various typo fixes. --- src/dg/derivative/mvt.tex | 4 ++-- src/fa/lc/hahn-banach.tex | 4 ++-- src/fa/tvs/spaces-of-linear.tex | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/src/dg/derivative/mvt.tex b/src/dg/derivative/mvt.tex index caf2fef..2ee3e24 100644 --- a/src/dg/derivative/mvt.tex +++ b/src/dg/derivative/mvt.tex @@ -113,9 +113,9 @@ \begin{proof} Let $g: [0, 1] \to F$ be defined by $g(t) = f((1 - t)x + ty)$. Since $f$ is Gateaux-differentiable, $g$ is differentiable by the chain rule \autoref{proposition:chain-rule-sets-conditions} with $Dg(t) = Df((1 - t)x + ty)(y - x)$, and continuous by \autoref{proposition:derivative-sets-real}. - By the \hyperref[Mean Value Theorem]{theorem:mean-value-theorem-line}, + By the \hyperref[Mean Value Theorem]{theorem:mean-value-theorem-line}, $f(y) - f(x) = g(1) - g(0)$ is contained in \[ - f(y) - f(x) = g(1) - g(0) \in \overline{\text{Conv}\bracs{Dg(t)|t \in [0, 1]}} = \overline{\text{Conv}\bracs{Df(z)(y - x)|z \in (x, y)}} + \overline{\text{Conv}\bracs{Dg(t)|t \in [0, 1]}} = \overline{\text{Conv}\bracs{Df(z)(y - x)|z \in (x, y)}} \] \end{proof} diff --git a/src/fa/lc/hahn-banach.tex b/src/fa/lc/hahn-banach.tex index f7a4491..f4a01f3 100644 --- a/src/fa/lc/hahn-banach.tex +++ b/src/fa/lc/hahn-banach.tex @@ -140,7 +140,7 @@ \end{enumerate} \end{proposition} \begin{proof} - (1): Let $\rho_M: E \to [0, \infty)$ be the quotient of $\rho$ by $M$, then $\rho_M \le \rho$ is a continuous seminorm on $E$ by \autoref{definition:quotient-norm}. Let $\phi_0: Kx \to K$ be defined by $\lambda x \mapsto \lambda \rho_M(x)$. By the \hyperref[Hahn-Banach theorem]{theorem:hahn-banach}, there exists $\phi \in \hom{E; K}$ such that $\dpb{x, \phi}{E} = \rho_M(x)$ and $|\phi| \le \rho_M \le \rho$. + (1): Let $\rho_M: E \to [0, \infty)$ be the quotient of $\rho$ by $M$, then $\rho_M \le \rho$ is a continuous seminorm on $E$ by \autoref{definition:quotient-norm}. Let $\phi_0: Kx \to K$ be defined by $\lambda x \mapsto \lambda \rho_M(x)$. By the \hyperref[Hahn-Banach Theorem]{theorem:hahn-banach}, there exists $\phi \in \hom{E; K}$ such that $\dpb{x, \phi}{E} = \rho_M(x)$ and $|\phi| \le \rho_M \le \rho$. (2): By (1) applied to $M = \bracs{0}$. @@ -149,7 +149,7 @@ \begin{proposition} \label{proposition:seminorm-lsc} - Let $E$ be a locally convex space and $\rho: E \to [0, \infty)$ be a continuous seminorm, then $\rho: E_w \to [0, \infty)$ is lower semicontinuous and Borel measurable. + Let $E$ be a locally convex space and $\rho: E \to [0, \infty)$ be a continuous seminorm, then $\rho: E_w \to [0, \infty)$ is lower semicontinuous and Borel measurable with respect to the weak topology. \end{proposition} \begin{proof} Let $x \in E$, then there exists $\phi_x \in E^*$ such that $\dpn{x, \phi_x}{E} = \rho(x)$ and $|\phi_x| \le \rho$. Thus diff --git a/src/fa/tvs/spaces-of-linear.tex b/src/fa/tvs/spaces-of-linear.tex index 5d05d01..027547f 100644 --- a/src/fa/tvs/spaces-of-linear.tex +++ b/src/fa/tvs/spaces-of-linear.tex @@ -188,7 +188,7 @@ and \[ - \psi_{x, \lambda}: F^E \to F \quad T \mapsto T(\lambda x) - Tx + \psi_{x, \lambda}: F^E \to F \quad T \mapsto T(\lambda x) - \lambda Tx \] are continuous with respect to the product topology. Since