iPad Air M4 vs. iPad Air M3: Performance and battery lifeThe most significant difference between the two iPad Air generations is their chipsets. The latest iPad Air launches with the M4 chip versus its predecessor’s M3 chip, and it gets a bump in RAM from 8GB to 12GB.
Ports: Three Thunderbolt 5 (USB-C) ports, HDMI port, SDXC card slot, MagSafe 3 charging port, and a headphone jack
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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:
After ninth red card this season, Chelsea are running out of time to fix discipline issues and must turn things around at Aston Villa
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