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diff --git a/2021/09/29/What-is-an-RKHS-1/index.html b/2021/09/29/What-is-an-RKHS-1/index.html
@@ -87,7 +87,7 @@
 <meta property="og:description" content="RKHS随处可见，本系列仅仅为Dino Sejdinovic, Arthur Gretto的What is an RKHS?整理(个人解读+补充)。 第一部分介绍一些必要的泛函的概念。本文中的希尔伯特空间定义使用实数和复数，但是举例仅讨论实数。">
 <meta property="og:locale">
 <meta property="article:published_time" content="2021-09-29T11:22:37.000Z">
-<meta property="article:modified_time" content="2025-02-05T12:06:10.318Z">
+<meta property="article:modified_time" content="2025-02-07T02:35:55.218Z">
 <meta property="article:author" content="Silven Huang">
 <meta property="article:tag" content="functional">
 <meta name="twitter:card" content="summary">
@@ -480,13 +480,18 @@ <h3 id="inner-product-内积">Inner product 内积</h3>
 <p><span class="math inline">\(\mathcal{F}\)</span>是一个在<span
 class="math inline">\(\mathbb{R}\)</span>上的向量空间，函数<span
 class="math inline">\(\langle\cdot,\cdot\rangle:\mathcal{F}\times\mathcal{F}\rightarrow\mathbb{R}\)</span>是<span
-class="math inline">\(\mathcal{F}\)</span>上的内积，需满足: - <span
+class="math inline">\(\mathcal{F}\)</span>上的内积，需满足:</p>
+<ul>
+<li><span
 class="math inline">\(\langle\alpha_1f_1+\alpha_2f_2,g\rangle_\mathcal{F}:\alpha_1\langle
 f_1,g\rangle_\mathcal{F}+\alpha_2\langle
-f_2,g\rangle_\mathcal{F}\)</span> - <span class="math inline">\(\langle
-f,g\rangle_\mathcal{F}=\langle g,f\rangle_\mathcal{F}\)</span> - <span
-class="math inline">\(\langle f,f\rangle_\mathcal{F}\geq 0 \text{ and
-}\langle f,f\rangle_\mathcal{F}=0 \text{ iff }f=0\)</span></p>
+f_2,g\rangle_\mathcal{F}\)</span></li>
+<li><span class="math inline">\(\langle f,g\rangle_\mathcal{F}=\langle
+g,f\rangle_\mathcal{F}\)</span></li>
+<li><span class="math inline">\(\langle f,f\rangle_\mathcal{F}\geq 0
+\text{ and }\langle f,f\rangle_\mathcal{F}=0 \text{ iff
+}f=0\)</span></li>
+</ul>
 <p>可以从内积诱导一个范数<span class="math inline">\(\parallel
 f\parallel_\mathcal{F}=\langle f,f\rangle_\mathcal{F}^{1/2}\)</span></p>
 <p>内积与范数有一些实用的性质:</p>

diff --git a/css/main.css b/css/main.css
@@ -1816,7 +1816,7 @@ pre .javascript .function {
   width: 4px;
   height: 4px;
   border-radius: 50%;
-  background: #dfc690;
+  background: #f13778;
 }
 .links-of-blogroll {
   font-size: 13px;