This post is primarily directed at students in the AI class at University Erlangen to explain the Davis-Putnam (Logemann-Loveland) Algorithm for SAT solving and implication graphs for clause learning. The goal in a SAT problem is to find an assignment that satisfies a set of propositional formulae \( \Delta\), or a proof that none exist,…
Basics of Abstract Logic (Also: A Pointless but Fun, Correct and Complete Calculus for Divisibility)
This post is primarily directed at students in the AI class at University Erlangen to explain the basics, and in particular the formalism we use in the lectures, of abstract logic. In its (not actually, but for our purposes) most abstract form, a logical system consists of three things: A language \(\mathbb L\), i.e. a…
Meta-Meta-Tools and Theory Graphs (What is MMT?)
I work a lot with and on a particular piece of software called MMT, which was developed by Florian, so this is my attempt to explain what it does – which is not exactly easy, as you’ll see, but one of the things you can do with MMT is make computers (on some level) understand…
What am I doing here? (My research topic)
In this post, I will try to explain what my Ph.D. is going to be about – of course, you can just read my proposal, but I assume that’s not really accessible to a lay-person. The broad topic is knowledge management across formal libraries, specifically libraries of formal mathematics obtained from (mostly) various computer-supported theorem…
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