<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.10.0">Jekyll</generator><link href="https://danielappelo.org/feed.xml" rel="self" type="application/atom+xml" /><link href="https://danielappelo.org/" rel="alternate" type="text/html" /><updated>2026-07-28T07:50:44+00:00</updated><id>https://danielappelo.org/feed.xml</id><title type="html">Daniel Appelö</title><subtitle>Appelö High Order Group - fast, stable and accurate numerical algorithms for differential equations</subtitle><author><name>Daniel Appelö</name><email>appelo@vt.edu</email></author></feed>