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AI Daily for 19 July: GPT-5.6 Math Breakthrough, AI Logo Convergence, AI Rental Listing Rules, Stack Overflow Decline

AI Daily for 19 July recaps 5 major AI Hacker News stories, moving through gpt-5.6 math breakthrough, ai logo convergence, ai rental listing rules, stack overflow decline.

1. GPT-5.6 Math Breakthrough

The next story says GPT-5.6 was guided with a long expert prompt to close a 30-year gap in convex optimization, with the result checked in Lean, and that matters because the argument over AI in mathematics is shifting from toy demos toward real research workflows. Hacker News split between people calling it a serious glimpse of AI as a research assistant and people arguing that the heavy prompt…

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