{"type": "article", "title": "Your function’s doppelgänger", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/your-functions-doppelganger", "original_source": "https://fedemagnani.github.io/math/2025/07/04/fenchel.html", "published": "2025-07-04T00:00:00+00:00", "accessed": "2026-07-08", "id": "your-functions-doppelganger"}