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 title: Ralf Jung
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-<div style="float:right; margin-left:0.8em; margin-bottom: 0.3em"><img src="me.jpg"></div>
+<div style="float:right; margin-left:0.8em; margin-bottom: 0.3em"><img src="me.jpg" srcset="me.jpg, me-2x.jpg 2x"></div>
 
 <p>I am assistant professor at <a href='https://ethz.ch' target="_blank">ETH Zürich</a> as part of the <a href='https://pls.inf.ethz.ch/' target="_blank">Institute for Programming Languages and Systems</a>.</br>
 Previously, I completed my <a href="thesis.html">PhD</a> at <a href="https://www.mpi-sws.org/">MPI-SWS</a> and <a href="https://www.uni-saarland.de/" target="_blank">Saarland University</a> in Saarbrücken, Germany; my advisor was <a href="https://people.mpi-sws.org/~dreyer/">Derek Dreyer</a>.
 I also did a post-doc in the <a href="https://pdos.csail.mit.edu/">PDOS group</a> at <a href="https://www.csail.mit.edu/" target="_blank">MIT CSAIL</a>.
 </p>
 
-<p><i>If you are interested in doing a PhD or post-doc working on programming language foundations, and in particular formal foundations for Rust, or if you are an ETH student interested in a Master Thesis in that area -- please <a href="contact.html">reach out</a>!</i>
-(Note that PhDs at ETH can start any time during the year, not just in September.)</p>
+<!-- <p><i>I am offering up to two fully funded PhD positions in my newly founded research group at <a href="https://ethz.ch/en/the-eth-zurich/working-teaching-and-research.html">ETH Zürich</a>, with flexible start date.
+I am looking for strong students that want to do research at the foundations of programming language theory, in program verification and separation logic, with a focus on Rust and Iris.
+Knowledge of Coq is greatly appreciated. Interested candidates can <a href="contact.html">contact me directly</a>.
+Please explain why you are interested in a PhD in this field and what your prior experience is. Also include a CV and possible contacts for recommendation letters.
+Note that doing a PhD at ETH Zürich generally requires a Master's degree, but there is a <a href="https://inf.ethz.ch/doctorate/direct-doctorate-computer-science.html">direct doctorate program</a> that you can enter with a Bachelor's degree (application deadline December 15th).</i></p> -->
 
 <p>My two main lines of work are about <a href="https://www.rust-lang.org/">Rust</a> and <a href="https://iris-project.org/">Iris</a>.<br>
 On the Rust side, I am working (also in collaboration with the Rust language team) towards a solid formal foundation for the language, including in particular the unsafe parts.