<div dir="ltr"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="text-align:center"><span style="letter-spacing:0.2px">                            </span><a href="https://popl20.sigplan.org/home/PADL-2020#22nd-international-symposium-on-practical-aspects-of-declarative-languages-padl-2020" id="gmail-22nd-international-symposium-on-practical-aspects-of-declarative-languages-padl-2020" class="gmail-anchor-link" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;background-color:transparent;box-sizing:border-box;color:inherit;text-decoration:inherit;word-break:break-word"><font size="4">22nd International Symposium on Practical Aspects of Declarative Languages (PADL 2020)</font></a></div><h2 style="text-align:center;box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(51,51,51);margin-top:20px;margin-bottom:10px"><font size="4"><font color="rgba(0, 0, 0, 0)"><span style="text-decoration-style:inherit;text-decoration-color:inherit"><a href="https://popl20.sigplan.org/home/PADL-2020#httpspopl20sigplanorghomepadl-2020" id="gmail-httpspopl20sigplanorghomepadl-2020" class="gmail-anchor-link" style="box-sizing:border-box;background-color:transparent;color:inherit;text-decoration:inherit;word-break:break-word"></a></span></font><a href="https://popl20.sigplan.org/home/PADL-2020" style="box-sizing:border-box;background-color:transparent;color:rgb(51,122,183);text-decoration-line:none;word-break:break-word">https://popl20.sigplan.org/home/PADL-2020</a>,</font></h2><h3 style="text-align:center;box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(51,51,51);margin-top:20px;margin-bottom:10px"><a href="https://popl20.sigplan.org/home/PADL-2020#20-21-january-2020-new-orleans-louisiana-united-states" id="gmail-20-21-january-2020-new-orleans-louisiana-united-states" class="gmail-anchor-link" style="box-sizing:border-box;background-color:transparent;color:inherit;text-decoration:inherit;word-break:break-word"><font size="4">20-21 January 2020, New Orleans, Louisiana, United States</font></a></h3><h4 style="text-align:center;box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(51,51,51);margin-top:10px;margin-bottom:10px"><font size="4"><a href="https://popl20.sigplan.org/home/PADL-2020#co-located-with-acm-popl-2020-httpspopl20sigplanorg" id="gmail-co-located-with-acm-popl-2020-httpspopl20sigplanorg" class="gmail-anchor-link" style="box-sizing:border-box;background-color:transparent;color:inherit;text-decoration:inherit;word-break:break-word">Co-located with ACM POPL 2020 (</a><a href="https://popl20.sigplan.org/" style="box-sizing:border-box;background-color:transparent;color:rgb(51,122,183);text-decoration-line:none;word-break:break-word">https://popl20.sigplan.org/</a>)</font></h4><hr style="box-sizing:content-box;height:0px;margin-top:20px;margin-bottom:20px;border-right:0px;border-bottom:0px;border-left:0px;border-top-style:solid;border-top-color:rgb(238,238,238);color:rgb(51,51,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(51,51,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><strong style="box-sizing:border-box">Declarative languages</strong> is an umbrella term that include functional, logic, and constraint programming languages. These languages have been successfully applied to many different real-world situations, ranging from database management to active networks to software engineering to decision support systems.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(51,51,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">New developments in theory and implementation have opened up new application areas. At the same time, applications of declarative languages to challenging problems raise intriguing research questions, such as scalable design and implementation, language extensions for application deployment, and programming environments. </p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(51,51,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">PADL is a well-established forum for researchers and practitioners to present original work emphasizing novel applications and implementation techniques for all forms of declarative programming, including functional and logic programming, database and constraint programming, and theorem proving. Topics of interest include, but are not limited to:</p><ul style="box-sizing:border-box;margin-top:0px;margin-bottom:10px;color:rgb(51,51,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><li style="box-s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