<head>
<meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>{% if page.title %}{{ page.title | escape }}{% else %}{{ site.title | escape }}{% endif %}</title> <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}"> <link rel="shortcut icon" href="/favicon.ico?" type="image/x-icon"> <link rel="icon" href="/favicon.ico?" type="image/x-icon"> <link rel="stylesheet" href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css"> <link rel="stylesheet" href="https://at.alicdn.com/t/font_8v3czwksspqlg14i.css"> <link rel="stylesheet" href="{{ "/assets/stylesheets/main.css " | prepend: site.baseurl }}"> <link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}"> <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ "/assets/feed.xml " | prepend: site.baseurl | prepend: site.url }}">
{% if site.baidu_tongji_id %}
<script> // 百度统计代码 var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "//hm.baidu.com/hm.js?{{site.baidu_tongji_id}}"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script>
{% endif %} {% if site.google_analytics_id %}
<script> // google analytics (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); ga('create', '{{site.google_analytics_id}}', 'auto'); ga('send', 'pageview'); </script>
{% endif %}
MathJax.Hub.Config({ tex2jax: { inlineMath: [["$","$"],["\\(","\\)"]] }, "HTML-CSS": { linebreaks: { automatic: true, width: "container" } }
}); </script> <script type=“text/javascript”
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script> {% endif %} {% seo %} </head>