At the Lean FRO, Kim Morrison, a Senior Research Software Engineer, recently ran an experiment that went well beyond our expectations. An AI agent converted zlib, a widely used C compression library embedded in countless systems, to Lean, with minimal human guidance. No special tooling was built. It was Claude, a general-purpose AI, with no special training for theorem proving, out of the box. The workflow had four steps. First, the AI produced a clean, readable Lean implementation of the zlib compression format, including the DEFLATE algorithm at its core. Second, the Lean version passed the library’s existing test suite, confirming behavioral equivalence. Third, key properties were stated and proved, not as tests, but as mathematical theorems. The capstone theorem:
Фото: Alaa Al-Marjani / Reuters
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For a year or so, listening to something with AirPods Pro and then opening Quick Look in the Finder to see a video with an audio track often glitches out the audio after a second or two. The mixed audio is fine before and after, but there is a very unpleasant glitch. No firmware or OS upgrade has resolved the issue.
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Why are UK prices still rising?
中国在该领域起步虽晚，但进展迅速。2022年6月，西安电子科技大学牵头建成“逐日工程”——这座75米高的测试塔，是世界首个全链路全系统的空间太阳能电站地面验证系统。近期，“逐日工程”取得一系列新突破：在“一对多”移动目标传能技术上，实现一套发射系统同时为多个移动目标供电，解决了多目标供电的精准控制问题，未来有望为多个太空飞行器或地面移动设备同时供电；在高精度指向控制上，进一步提升微波波束的指向精度，减少了能量损耗；在发射与接收天线集成化、小型化与轻量化上取得关键进展，为设备的太空部署奠定了基础。此外，中国航天科技集团五院、重庆大学、四川大学、上海大学、中国科学院电工所、哈尔滨工业大学、上海交通大学等单位也积极参与相关关键技术攻关，形成多学科协同创新格局。。业内人士推荐体育直播作为进阶阅读