11 files changed, 17 insertions, 17 deletions
diff --git a/build/website/about/index.html b/build/website/about/index.html
index b9883bd..eabdefe 100644
--- a/build/website/about/index.html
+++ b/build/website/about/index.html
@@ -35,7 +35,7 @@ About
 	code here:
 </p>
 
-<code>git clone git://prestonpan.tech/prestonpan.git</code>
+<code>git clone git://nullring.xyz/prestonpan.git</code>
 
 <h2>Business</h2>
 
diff --git a/build/website/about/resume.pdf b/build/website/about/resume.pdf
index aed2614..3a26652 100644
--- a/build/website/about/resume.pdf
+++ b/build/website/about/resume.pdf
diff --git a/build/website/about/source/resume.ms b/build/website/about/source/resume.ms
index 2bc6535..90d5727 100644
--- a/build/website/about/source/resume.ms
+++ b/build/website/about/source/resume.ms
@@ -29,7 +29,7 @@
 .ps 18
 .B "Preston Pan"
 .ps 10
-https://prestonpan.tech
+https://preston.nullring.xyz
 .TS
 tab(;) nospaces;
 l rx.
@@ -64,7 +64,7 @@ T}
 .B "Note "
 \(en
 .I "All my projects have their respective soure code avaiable at "
-.UL "https://git.prestonpan.tech".
+.UL "https://git.nullring.xyz".
 .BL
 .B "The Null Webring"
 \(en
diff --git a/build/website/about/source/resume.pdf b/build/website/about/source/resume.pdf
index aed2614..3a26652 100644
--- a/build/website/about/source/resume.pdf
+++ b/build/website/about/source/resume.pdf
diff --git a/build/website/index.html b/build/website/index.html
index 4b1292b..d5e4492 100644
--- a/build/website/index.html
+++ b/build/website/index.html
@@ -77,15 +77,14 @@ Preston Pan
 
 <p>Here are the services that I run on my server/socially:</p>
 <ul>
-	<li><a href="https://git.prestonpan.tech/prestonpan.git/atom">rss feed</a> -- atom feed for the website commit page to keep you updated on changes.</li>
+	<li><a href="https://git.nullring.xyz/prestonpan.git/atom">rss feed</a> -- atom feed for the website commit page to keep you updated on changes.</li>
 	<li><a href="https://fedi.andrei.website/u/LiCoO2/rss">rss feed (2)</a> -- rss feed for my honk account, a fediverse server.</li>
 	<li><a href="https://radio.nullring.xyz">Radio</a> -- listen to music that Null Identity people have composed.</li>
-	<li><a href="gopher://prestonpan.tech">Gopherhole</a> -- logs for andrei.website and other cool stuff, must be viewed with a gopher client.</li>
-	<li><a href="https://git.prestonpan.tech">Git server</a> -- see the code that I write or my dotfiles and other stuff.</li>
+	<li><a href="gopher://nullring.xyz">Gopherhole</a> -- logs for andrei.website and other cool stuff, must be viewed with a gopher client.</li>
+	<li><a href="https://git.nullring.xyz">Git server</a> -- see the code that I write or my dotfiles and other stuff.</li>
 	<li><a href="https://nullring.xyz">The null webring</a> -- a webring that I made (apparently there is another one by this name but ignore that).</li>
 	<li><a href="https://society.nullring.xyz">The Null Identity </a> -- it's a <b>ahem</b> tightly knit community located in victoria. Yeah, that's the term.</li>
-	<li>IRC server: ircs://prestonpan.tech:6697, no verification of tls (self signed).</li>
-	<li>I2P website: <pre class="crypto-pre"><code class="crypto">http://5ziug5tklfrep5gy3gv52xsoujq3nuxstqcj7a2s4jz4psveek4q.b32.i2p</code></pre>, if you are on i2p and want to see my clearnet website, it is at https://prestonpan.tech.</li>
+	<li>I2P website: <pre class="crypto-pre"><code class="crypto">http://5ziug5tklfrep5gy3gv52xsoujq3nuxstqcj7a2s4jz4psveek4q.b32.i2p</code></pre>, if you are on i2p and want to see my clearnet website, it is at https://preston.nullring.xyz.</li>
 </ul>
 
 <h2>Webrings</h2>
@@ -109,7 +108,6 @@ Preston Pan
 
 <p>Here are some methods of donating I support:</p>
 <ul>
-	<li>XMR, OpenAlias: preston@prestonpan.tech</li>
 	<li>XMR: <pre class="crypto-pre"><code class="crypto">46RF35tTC9XhoRh745E9HkXD92t64SJw5Zby9ugNGmo2gGxM7iMhYuWAfhxp9FSQMeFKxcS2yoNLpQxPfpeThSQGH1YDr6e</code></pre></li>
 </ul>
 <p>
diff --git a/build/website/mathematics/calculus/index.html b/build/website/mathematics/calculus/index.html
index 4d7f0bc..984ae39 100644
--- a/build/website/mathematics/calculus/index.html
+++ b/build/website/mathematics/calculus/index.html
@@ -40,8 +40,8 @@ the derivative).
 <h2>Elementary Calculus</h2>
 <ul>
 	<li><a href="./derivative.pdf">Derivative</a> -- a fundamental operation regarding calculus.</li>
-	<li><a href="./derivative_identities.pdf">Derivative Identities</a> -- Deriving identities related to derivatives of simple functions.</li>
-	<li><a href="./derivative_rules.pdf">Derivative Rules</a> -- Deriving common derivative rules.</li>
+	<li><a href="./derivative_identities.pdf">Derivative Identities</a> -- Deriving identities related to derivatives.</li>
+	<li><a href="./chain_rule.pdf">Chain rule</a> -- Explaining and deriving the chain rule.</li>
 </ul>
 
 <h2>Multivariable</h2>
diff --git a/build/website/mathematics/calculus/source/chain_rule.ms b/build/website/mathematics/calculus/source/chain_rule.ms
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/build/website/mathematics/calculus/source/chain_rule.ms
diff --git a/build/website/mathematics/calculus/source/index.html b/build/website/mathematics/calculus/source/index.html
index 1676ae2..8c8c18e 100644
--- a/build/website/mathematics/calculus/source/index.html
+++ b/build/website/mathematics/calculus/source/index.html
@@ -30,6 +30,8 @@ Calculus
 
 <ul>
 	<li><a href="./derivative.ms">Derivative</a> -- a fundamental operation regarding calculus.</li>
+
+	<li><a href="./derivative_identities.ms">Derivative Identities</a> -- identities.</li>
 </ul>
 
 	</div>
diff --git a/build/website/preston.pub b/build/website/preston.pub
index 9a61ac2..0c2ac6d 100644
--- a/build/website/preston.pub
+++ b/build/website/preston.pub
@@ -1 +1 @@
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJdHAoDkwWmZqZAAcfC65A2N01CcfTHNiEvSvJ+2Pr35 preston@preston
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINSshvS1N/42pH9Unp3Zj4gjqs9BXoin99oaFWYHXZDJ preston@preston-arch
diff --git a/build/website/projects/dotfiles.html b/build/website/projects/dotfiles.html
index 5066d49..a7e8efc 100644
--- a/build/website/projects/dotfiles.html
+++ b/build/website/projects/dotfiles.html
@@ -40,14 +40,14 @@ Dotfiles
 <img src="/img/rice3.png" alt="Picture taken of dotfiles">
 
 <p>You can get the dotfiles here:</p>
-<code>git clone git://prestonpan.tech/dotfiles_dracula.git</code>
+<code>git clone git://nullring.xyz/dotfiles_dracula.git</code>
 
 <p>And given a certain suckless program, you can clone my version like this:</p>
-<code>git clone git://prestonpan.tech/[suckless_program]_dracula.git</code>
+<code>git clone git://nullring.xyz/[suckless_program]_dracula.git</code>
 
 <p>
 	If you still have problems getting the copies of the software, you can
-	<a href="https://git.prestonpan.tech">browse my git frontend</a> for the software
+	<a href="https://git.nullring.xyz">browse my git frontend</a> for the software
 	names.
 </p>
 	</div>
diff --git a/build/website/projects/no_excess.html b/build/website/projects/no_excess.html
index 21910b1..3dc4a46 100644
--- a/build/website/projects/no_excess.html
+++ b/build/website/projects/no_excess.html
@@ -36,11 +36,11 @@ NoExcess
 </p>
 
 <p>You can get the program here:</p>
-<code>git clone git://prestonpan.tech/no_excess.git</code>
+<code>git clone git://nullring.xyz/no_excess.git</code>
 
 <p>
 	If you still have problems getting the copies of the software, you can
-	<a href="https://git.prestonpan.tech">browse my git frontend</a> for the software
+	<a href="https://git.nullring.xyz">browse my git frontend</a> for the software
 	names.
 </p>