This volume constitutes the pre-proceedings of the 31st International Symposium on Logic-Based Program Synthesis and Transformation (LOPSTR 2021), held on 7-8th September 2021 as a hybrid (blended) meeting, both in-person (at the Teachers' House in Tallinn, Estonia) and virtual, and co-located with the 23rd International Symposium on Principles and Practice of Declarative Programming (PPDP 2021). After discussion at the symposium papers will go through a second round of refereeing and selection for the formal proceedings.
翻译:该卷是2021年9月7日至8日举行的第三十一次基于逻辑的方案综合和转型国际专题讨论会(LOPSTR 2021)的预发本,该专题讨论会是一次混合(混合)会议,有的是面对面的(爱沙尼亚塔林教师之家),有的是虚拟的,与第二十三次关于宣布性方案编制的原则和做法的国际专题讨论会(PPDP 2021)合用同一地点,在专题讨论会上的讨论结束后,将进行第二轮正式诉讼程序的评议和挑选。